{"cveID":"CVE-2021-20035","vendorProject":"SonicWall","product":"SMA100 Appliances","vulnerabilityName":"SonicWall SMA100 Appliances OS Command Injection Vulnerability","dateAdded":"2025-04-16","shortDescription":"SonicWall SMA100 appliances contain an OS command injection vulnerability in the management interface that allows a remote authenticated attacker to inject arbitrary commands as a 'nobody' user, which could potentially lead to code execution.","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","dueDate":"2025-05-07","knownRansomwareCampaignUse":"Unknown","notes":"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0022 ; https://nvd.nist.gov/vuln/detail/CVE-2021-20035","cwes":["CWE-78"],"year":2021,"state":"mapped","stale_reasons":[],"mappings":[{"domain":"enterprise","cve":"CVE-2021-20035","technique":"T1059","technique_name_at_mapping":"Command and Scripting Interpreter","mapping_type":"exploitation_technique","capability_group":"command_injection","comments":"While this vulnerability was originally considered a denial-of-service issue in 2021, this improper neutralization issue has been exploited in 2025 as a remote code execution vulnerability. After authenticating (either with default credentials or via brute force, password stuffing, or dictionary attacks), an attacker can execute arbitrary commands as a \"nobody\" user.","references":["https://www.secureblink.com/cyber-security-news/sonic-wall-sma-rce-vulnerability-cve-2021-20035-under-active-exploitation-in-2025"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"},{"domain":"enterprise","cve":"CVE-2021-20035","technique":"T1078","technique_name_at_mapping":"Valid Accounts","mapping_type":"exploitation_technique","capability_group":"command_injection","comments":"While this vulnerability was originally considered a denial-of-service issue in 2021, this improper neutralization issue has been exploited in 2025 as a remote code execution vulnerability. After authenticating (either with default credentials or via brute force, password stuffing, or dictionary attacks), an attacker can execute arbitrary commands as a \"nobody\" user.","references":["https://www.secureblink.com/cyber-security-news/sonic-wall-sma-rce-vulnerability-cve-2021-20035-under-active-exploitation-in-2025"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"}],"techniques":[{"id":"T1059","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Command and Scripting Interpreter","name_at_mapping":"Command and Scripting Interpreter","renamed":false,"revoked_by":null,"mapping_types":["exploitation_technique"],"sigma_rule_count":95,"has_detection_strategy":true},{"id":"T1078","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Valid Accounts","name_at_mapping":"Valid Accounts","renamed":false,"revoked_by":null,"mapping_types":["exploitation_technique"],"sigma_rule_count":56,"has_detection_strategy":true}],"mapping_types":["exploitation_technique"],"has_exploitation_technique":true,"mapping_attack_versions":["16.1"],"mapping_domains":["enterprise"],"sigma_coverage":"full","sigma_rules_tagged_cve":[],"added_after_mapping_snapshot":false,"_source":"kevmap","_built":"2026-08-23 05:47 UTC","_attack_version":"19.2"}