Coverage › CVE-2025-6554
CVE-2025-6554 Mapped Sigma
Google Chromium V8 Type Confusion Vulnerability
- Vendor / product
- Google — Chromium V8
- Description (CISA)
- Google Chromium V8 contains a type confusion vulnerability that could allow a remote attacker to perform arbitrary read/write via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.
- Added to KEV
- 2025-07-02
- Due date
- 2025-07-23
- Required action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- Known ransomware use
- Unknown
- CWE
- CWE-843
- CISA notes
- https://chromereleases.googleblog.com/2025/06/stable-channel-update-for-desktop_30.html?m=1
https://nvd.nist.gov/vuln/detail/CVE-2025-6554 - Elsewhere
- cve.org · NVD · CISA KEV · JSON
ATT&CK techniques · CTID Mappings Explorer, ATT&CK 16.1, KEV snapshot 2025-07-28
6 mapping objects across 6 techniques. exploitation technique states how the vulnerability is exploited; primary and secondary impact state what exploitation achieves. They are different claims and are labelled as such. Mappings marked mobile refer to ATT&CK Mobile; this site traverses the Enterprise bundle only and shows no detection chain for them.
| Technique | Mapping type | CTID comment | Status in v19.2 |
|---|---|---|---|
| T1189 Drive-by Compromise | exploitation technique | Victims are tricked into visiting malicious web pages crafted to trigger memory corruption, which can lead to arbitrary code execution. ref 1 · ref 2 |
live |
| T1203 Exploitation for Client Execution | exploitation technique | Victims are tricked into visiting malicious web pages crafted to trigger memory corruption, which can lead to arbitrary code execution. ref 1 · ref 2 |
live |
| T1456 Drive-By Compromisemobile | exploitation technique | Victims are tricked into visiting malicious web pages crafted to trigger memory corruption, which can lead to arbitrary code execution. ref 1 · ref 2 |
not checked (Mobile) |
| T1658 Exploitation for Client Executionmobile | exploitation technique | Victims are tricked into visiting malicious web pages crafted to trigger memory corruption, which can lead to arbitrary code execution. ref 1 · ref 2 |
not checked (Mobile) |
| T1059 Command and Scripting Interpreter | primary impact | Victims are tricked into visiting malicious web pages crafted to trigger memory corruption, which can lead to arbitrary code execution. ref 1 · ref 2 |
live |
| T1623 Command and Scripting Interpretermobile | primary impact | Victims are tricked into visiting malicious web pages crafted to trigger memory corruption, which can lead to arbitrary code execution. ref 1 · ref 2 |
not checked (Mobile) |
Detection chain · ATT&CK Enterprise v19.2 detection strategies, analytics, log sources
T1059 Command and Scripting Interpreter primary impact
- DET0516 Behavioral Detection of Command and Scripting Interpreter Abuse
AN1428 WindowsDetects the execution of scripting or command interpreters (e.g., powershell.exe, cmd.exe, wscript.exe) outside expected administrative time windows or from abnormal user contexts, often followed by encoded/obfuscated arguments or secondary execution events.Tunable:
CommandLinePatternParentProcessNameTimeWindowAN1429 LinuxDetects use of shell interpreters (e.g., bash, sh, python, perl) initiated by users or processes not normally executing them, especially when chaining suspicious utilities like netcat, curl, or ssh.Tunable:InterpreterNameUserContextExecutionChainLengthAN1430 macOSDetects launch of command-line interpreters via Terminal, Automator, or hiddenosascript, especially when parent process lineage deviates from user-initiated applications.macos:unifiedloglog stream --info --predicate 'eventMessage CONTAINS "exec"'→ DC0032 Process CreationTunable:LaunchAgentNameScriptNameTerminalAppUsageAN1431 ESXiDetects use of 'esxcli system' or direct interpreter commands (e.g., busybox shell) invoked from SSH or host terminal unexpectedly.Tunable:ShellEnabledFlagSSHContextAN1432 Network DevicesIdentifies CLI interpreter access (e.g., Cisco IOS, Juniper JUNOS) viaenablemode or scripting-capable sessions used by uncommon accounts or from unknown IPs.Tunable:UserRoleDeviceType
Sigma rules tagged attack.t1059 (95)
Author: Sohan G (D4rkCiph3r)
· 2023-04-05 · logsource: product=macos category=process_creation · 0250638a-2b28-4541-86fc-ea4c558fa0c6
Detects suspicious child processes spawned from browsers. This could be a result of a potential web browser exploitation.
Author: Nasreddine Bencherchali (Nextron Systems)
· 2023-04-17 · logsource: product=windows category=process_creation · 05ebafc8-7aa2-4bcd-a269-2aec93f9e842
Detects usage of winget to add new additional download sources
Author: Victor Sergeev, oscd.community
· 2020-10-09 (modified 2024-04-23) · logsource: product=windows category=process_creation · 06b401f4-107c-4ff9-947f-9ec1e7649f1e
Detects execution of "ftp.exe" script with the "-s" or "/s" flag and any child processes ran by "ftp.exe".
Author: Nasreddine Bencherchali (Nextron Systems), E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community
· 2022-06-14 (modified 2023-01-04) · logsource: product=windows category=process_creation · 0955e4e1-c281-4fb9-9ee1-5ee7b4b754d2
Detects execition of commands and binaries from the context of The program compatibility assistant (Pcalua.exe). This can be used as a LOLBIN in order to bypass application whitelisting.
Author: Swachchhanda Shrawan Poudel (Nextron Systems)
· 2025-11-25 · logsource: product=linux category=process_creation · 11bb9b26-4179-4a06-afcb-1ec31fce1627
Detects potential Shai-Hulud malware indicators based on specific command line arguments associated with its execution.
Author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)
· 2022-02-08 (modified 2026-02-17) · logsource: product=windows category=process_creation · 1228c958-e64e-4e71-92ad-7d429f4138ba
Detects suspicious script execution from suspicious directories or folders accessible by environment variables that may indicate malware activity.
Script interpreters (cscript, wscript, mshta, powershell) executing from folders like Temp, Public, or user profile directories may suggest attempts to evade detection or execute malicious scripts.
Author: Josh Nickels, Marius Rothenbücher
· 2024-09-06 · logsource: product=windows category=dns_query · 12310575-e8b1-475c-a976-57ed540b349c
Detects unusual domain resolutions originating from CScript/WScript that can identify malicious javascript files executing in an environment, often as a result from a phishing or watering hole attack.
Author: Florian Roth (Nextron Systems)
· 2021-11-20 (modified 2023-03-29) · logsource: product=windows category=file_event · 1277f594-a7d1-4f28-a2d3-73af5cbeab43
Detects Windows shells and scripting applications that write files to suspicious folders
Author: frack113, Tim Shelton (update fp)
· 2022-12-05 (modified 2025-03-06) · logsource: product=windows category=process_creation · 178e615d-e666-498b-9630-9ed363038101
Detects when a shell program such as the Windows command prompt or PowerShell is launched with system privileges from a uncommon parent location.
Author: Micah Babinski
· 2023-10-15 · logsource: product=windows category=file_event · 1a433e1d-03d2-47a6-8063-ece992cf4e73
Detects the usage of curl.exe, KeyScramblerLogon, or other non-standard/suspicious processes used to create Autoit3.exe.
This activity has been associated with DarkGate malware, which uses Autoit3.exe to execute shellcode that performs
process injection and connects to the DarkGate command-and-control server. Curl, KeyScramblerLogon, and these other
processes consitute non-standard and suspicious ways to retrieve the Autoit3 executable.
Author: Andreas Braathen (mnemonic.io)
· 2023-11-14 · logsource: product=windows category=process_creation · 1ddaa9a4-eb0b-4398-a9fe-7b018f9e23db
Detects exploitation attempt of CVE-2023-22518 (Confluence Data Center / Confluence Server), where an attacker can exploit vulnerable endpoints to e.g. create admin accounts and execute arbitrary commands.
Author: Nasreddine Bencherchali (Nextron Systems)
· 2023-01-02 · logsource: product=windows category=process_creation · 20a5ffa1-3848-4584-b6f8-c7c7fd9f69c8
Detects execution of ruby using the "-e" flag. This is could be used as a way to launch a reverse shell or execute live ruby code.
Author: Tim Rauch (rule), Elastic (idea)
· 2022-10-17 · logsource: product=macos category=process_creation · 234dc5df-40b5-49d1-bf53-0d44ce778eca
Detects when a built-in utility is used to decode and decrypt a payload after a macOS disk image (DMG) is executed. Malware authors may attempt to evade detection and trick users into executing malicious code by encoding and encrypting their payload and placing it in a disk image file. This behavior is consistent with adware or malware families such as Bundlore and Shlayer.
Author: Nasreddine Bencherchali (Nextron Systems)
· 2023-06-14 · logsource: product=windows category=process_creation · 236d8e89-ed95-4789-a982-36f4643738ba
Detects execution of the "VMwareToolBoxCmd.exe" with the "script" and "set" flag to setup a specific script that's located in a potentially suspicious location to run for a specific VM state
Author: Nasreddine Bencherchali (Nextron Systems), X__Junior (Nextron Systems)
· 2024-01-11 · logsource: product=windows category=process_creation · 2433a154-bb3d-42e4-86c3-a26bdac91c45
Detects the execution of a renamed "PingCastle" binary based on the PE metadata fields.
All 95 rules on the technique page →
T1189 Drive-by Compromise exploitation technique
- DET0176 Drive-by Compromise — Behavior-based, Multi-platform Detection Strategy (T1189)
AN0498 WindowsCorrelated evidence of anomalous browser/network behavior (suspicious external resource fetches and script injection patterns) followed by atypical child processes, ephemeral execution contexts, memory modification or process injection, and unexpected file drops. Defender sees network requests to previously unseen/suspicious domains or resources + browser process spawning unusual children or loading unsigned modules + file writes or registry changes shortly after those requests.WinEventLog:Application
Browser or plugin/application logs showing script errors, plugin enumerations, or unusual extension load events→ DC0038 Application Log Contentetw:Microsoft-Windows-Kernel-ProcessMemory Modification / Unmapped module load or suspicious RWX allocations in the process space of a browser process→ DC0020 Process ModificationNSM:Flowhttp.request: HTTP requests and responses for specific script resources, unexpected content-types (application/octet-stream for script URLs), suspicious referrers, or obfuscated javascript resources→ DC0085 Network Traffic ContentTunable:TimeWindowKnownGoodDomainsListPayloadEntropyThresholdUserContextAN0499 LinuxCorrelated evidence of browser or webview fetches to uncommon domains or mutated JS resources (proxy/NGFW logs + Zeek/HTTP logs) followed by unexpected interpreters or script engines executing (python, ruby, sh) spawned from browser processes or user sessions, rapid on-disk staging in /tmp, and outbound connections that deviate from baseline. Defender sees: uncommon resource fetch → short-lived child process executions from user browser context → file writes in temp directories → anomalous outbound C2-like connections.auditd:SYSCALLexecve: execve calls where a browser/webview process is parent and child is interpreter (python, sh, ruby) or downloader (curl, wget)→ DC0032 Process Creationlinux:syslogApplication or browser logs (webview errors, plugin enumerations) indicating suspicious script evaluation or plugin loads→ DC0038 Application Log ContentNSM:Flowhttp::response: HTTP responses with suspicious content-type for scripts, long obfuscated javascript bodies, or redirects to exploit kit domains→ DC0085 Network Traffic Contentlinux:SysmonNew files in /tmp, /var/tmp, $HOME/.cache, executed within TimeWindow after browser HTTP fetch→ DC0039 File CreationNSM:ConnectionsOutbound connections from newly spawned child processes or from the browser to uncommon endpoints or on anomalous ports→ DC0082 Network Connection CreationTunable:TempPathPatternsUserShellWhitelistDomainRarityThresholdAN0500 macOSCorrelated evidence where Safari/Chrome/WebKit-based processes issue network requests for uncommon or obfuscated JS resources followed by spawning of script interpreters, launchd or ad-hoc binaries, unusual child processes, or dynamic library loads into browser processes. Defender sees: proxy/HTTP logs with suspicious resource content + unifiedlogs/ASL showing browser/plugin crashes or extension loads + process events indicating child process creation and file writes to /var/folders or /tmp shortly after the fetch.macos:unifiedlogLogs from unifiedlogging that show browser crashes, plugin enumerations, extension installs or errors around the same time as suspicious network fetches→ DC0038 Application Log Contentmacos:unifiedlogprocess_create: Process creation where parent is Safari/Google Chrome and child is script interpreter or signed-but-unusual helper binary→ DC0032 Process Creationmacos:unifiedlogNew files written to /var/folders, /tmp, ~/Library/Caches, or ~/Downloads by browser context or its children→ DC0039 File CreationNSM:FlowHTTP/HTTPS requests for script resources flagged by content inspection (excessive obfuscation, eval usage, unusual redirects)→ DC0085 Network Traffic Contentmacos:unifiedlogAnomalous dyld dynamic library loads or RWX memory mappings in browser process→ DC0020 Process ModificationTunable:SleepyUserThresholdExtensionInstallPolicyAN0501 Identity ProviderPost-compromise identity & session anomalies that follow a drive-by compromise: token reuse from new/unfamiliar IPs, anomalous sign-in patterns for previously inactive users, unexpected consent/grant events, or provisioning changes. Defender sees an endpoint/browser compromise (network + endpoint signals) followed by unusual IdP events: new refresh token issuance, consent/consent-grant events, odd MFA bypass patterns, or unusual OAuth client registrations.azure:signinlogsSignIn: Sign-ins flagged as atypical (new geographic region, unfamiliar device id) shortly after correlated endpoint/browser compromise times→ DC0002 User Account Authenticationm365:unifiedApplication Consent grants, new OAuth client registrations, or unusual admin-level activities executed by a user account shortly after suspected drive-by compromise→ DC0038 Application Log Contentsaas:authRefresh token issuance or refresh token usage from new IPs or user agents→ DC0013 User Account MetadataAWS:CloudTrailConsoleLogin: If IdP backed by cloud provider, Console login from new IP/agent after correlated endpoint compromise→ DC0067 Logon Session CreationTunable:IdpAlertWindowHighRiskCountryListDeviceTrustLevel
Sigma rules tagged attack.t1189 (3)
Author: Sohan G (D4rkCiph3r)
· 2023-04-05 · logsource: product=macos category=process_creation · 0250638a-2b28-4541-86fc-ea4c558fa0c6
Detects suspicious child processes spawned from browsers. This could be a result of a potential web browser exploitation.
Author: Florian Roth (Nextron Systems)
· 2017-10-25 (modified 2022-08-08) · logsource: category=proxy · 4922a5dd-6743-4fc2-8e81-144374280997
Detects a flashplayer update from an unofficial location
Author: Saw Win Naung, Nasreddine Bencherchali
· 2021-08-15 (modified 2022-06-14) · logsource: category=webserver · 65354b83-a2ea-4ea6-8414-3ab38be0d409
Detects XSS attempts injected via GET requests in access logs
T1203 Exploitation for Client Execution exploitation technique
- DET0287 Exploitation for Client Execution – cross-platform behavior chain (browser/Office/3rd-party apps)
AN0797 WindowsCause→effect chain: (1) A client app (browser, Office, PDF/Flash/reader) experiences a crash/abnormal exit or loads from an unusual location, then (2) drops or modifies a file in user-writable paths, and/or (3) spawns an unexpected child (e.g., powershell/cmd/mshta/rundll32/wscript/installer), and (4) establishes outbound C2-like connections shortly after. Correlate application logs, file writes, process lineage, and network egress within a short window.Tunable:
TimeWindowHighRiskChildrenUserPathsAllowedPluginsEgressAllowlistAN0798 LinuxCause→effect chain: (1) Browser/Office/reader process logs crash/segfault or abnormal sandbox message, (2) new executable/script/write occurs in $HOME (Downloads, ~/.cache, /tmp), (3) unexpected child like curl/wget/bash/python opens network connections soon after.Tunable:TimeWindowUserPathsHighRiskChildrenPackageUpdatersAN0799 macOSCause→effect chain: (1) App crash/abnormal termination in unified logs for Safari/Chrome/Office/Preview, (2) new files/scripts in ~/Library, ~/Downloads, /private/var/folders/*, (3) unexpected child (osascript, zsh, bash, curl) spawned by those apps, (4) new outbound connections.Tunable:TimeWindowHighRiskChildrenUserPathsQuarantineBypass
Sigma rules tagged attack.t1203 (35)
Author: Florian Roth (Nextron Systems)
· 2017-11-07 (modified 2023-05-18) · logsource: category=proxy · 00d0b5ab-1f55-4120-8e83-487c0a7baf19
Detects download of certain file types from hosts in suspicious TLDs
Author: Florian Roth (Nextron Systems)
· 2019-10-24 (modified 2021-11-27) · logsource: product=windows category=process_creation · 023394c4-29d5-46ab-92b8-6a534c6f447b
Detects suspicious Hangul Word Processor (Hanword) sub processes that could indicate an exploitation
Author: Sohan G (D4rkCiph3r)
· 2023-04-05 · logsource: product=macos category=process_creation · 0250638a-2b28-4541-86fc-ea4c558fa0c6
Detects suspicious child processes spawned from browsers. This could be a result of a potential web browser exploitation.
Author: Arnim Rupp (Nextron Systems)
· 2026-06-15 · logsource: category=antivirus · 101a1877-2cf4-474d-abfd-7f6ac4788d1a
Detects a highly relevant Antivirus alert that reports APT malware.
This event must not be ignored just because the AV has blocked the malware but investigate, how it came there in the first place.
Author: Nasreddine Bencherchali (Nextron Systems)
· 2023-08-31 · logsource: product=windows category=process_creation · 146aace8-9bd6-42ba-be7a-0070d8027b76
Detects potentially suspicious child processes of WinRAR.exe.
Author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), MSTIC
· 2021-10-15 (modified 2022-10-05) · logsource: product=linux category=process_creation · 21541900-27a9-4454-9c4c-3f0a4240344a
Rule to detect the use of the SCX RunAsProvider Invoke_ExecuteShellCommand to execute any UNIX/Linux command using the /bin/sh shell.
SCXcore, started as the Microsoft Operations Manager UNIX/Linux Agent, is now used in a host of products including
Microsoft Operations Manager, Microsoft Azure, and Microsoft Operations Management Suite.
Author: Florian Roth (Nextron Systems), Arnim Rupp
· 2018-09-09 (modified 2026-06-15) · logsource: category=antivirus · 238527ad-3c2c-4e4f-a1f6-92fd63adb864
Detects a highly relevant Antivirus alert that reports an exploitation framework.
This event must not be ignored just because the AV has blocked the malware but investigate, how it came there in the first place.
Author: Florian Roth
· 2025-01-18 · logsource: product=linux category=process_creation · 297241f3-8108-4b3a-8c15-2dda9f844594
Detects the execution of a shell as sub process of "rsync" without the expected command line flag "-e" being used, which could be an indication of exploitation as described in CVE-2024-12084. This behavior is commonly associated with attempts to execute arbitrary commands or escalate privileges, potentially leading to unauthorized access or further exploitation.
Author: Sittikorn S, frack113
· 2021-07-16 (modified 2023-08-17) · logsource: product=windows category=registry_set · 32b5db62-cb5f-4266-9639-0fa48376ac00
Detects patterns as noticed in exploitation of Windows CVE-2021-31979 CVE-2021-33771 vulnerability and DevilsTongue malware by threat group Sourgum
Author: Nasreddine Bencherchali (Nextron Systems)
· 2023-06-12 (modified 2024-03-12) · logsource: product=windows category=network_connection · 3c21219b-49b5-4268-bce6-c914ed50f09c
Detects network connections from "dfsvc.exe" used to handled ClickOnce applications to non-local IPs
Author: Swachchhanda Shrawan Poudel (Nextron Systems)
· 2025-05-20 · logsource: category=webserver · 41956f7c-7a6b-46d6-b6bb-da6eb2e83fbe
Detects potential exploitation of a chained vulnerability attack targeting Ivanti EPMM 12.5.0.0.
CVE-2025-4427 allows unauthenticated access to protected API endpoints via an authentication bypass,
which can then be leveraged to trigger CVE-2025-4428 — a remote code execution vulnerability through
template injection. This sequence enables unauthenticated remote code execution, significantly increasing
the impact of exploitation.
Author: Huntress Labs, Swachchhanda Shrawan Poudel (Nextron Systems)
· 2025-10-31 · logsource: product=windows category=process_creation · 43259cc4-1b80-4931-bd98-baea01afc196
Detects the creation of command-line interpreters (cmd.exe, powershell.exe) as child processes of Windows Server Update Services (WSUS) related process wsusservice.exe.
This behavior is a key indicator of exploitation for the critical remote code execution vulnerability such as CVE-2025-59287, where attackers spawn shells to conduct reconnaissance and further post-exploitation activities.
Author: Florian Roth (Nextron Systems), Zach Mathis
· 2020-01-15 (modified 2022-10-22) · logsource: product=windows service=application · 48d91a3a-2363-43ba-a456-ca71ac3da5c2
Detects events generated by user-mode applications when they call the CveEventWrite API when a known vulnerability is trying to be exploited.
MS started using this log in Jan. 2020 with CVE-2020-0601 (a Windows CryptoAPI vulnerability.
Unfortunately, that is about the only instance of CVEs being written to this log.
Author: Nasreddine Bencherchali (Nextron Systems)
· 2023-06-12 (modified 2024-01-31) · logsource: product=windows category=network_connection · 4c5fba4a-9ef6-4f16-823d-606246054741
Detects an initiated network connection over uncommon ports from "dfsvc.exe". A utility used to handled ClickOnce applications.
Author: Swachchhanda Shrawan Poudel (Nextron Systems)
· 2025-11-25 · logsource: product=windows category=process_creation · 5299fadf-f228-4526-8274-251db1960be9
Detects the execution of `bun_environment.js` via the Bun runtime, a behavior associated with the Shai-Hulud "Second Coming" NPM supply chain attack.
The malware uses a `setup_bun.js` script to install the Bun runtime if not present, and then executes the malicious `bun_environment.js` payload.