{"cveID":"CVE-2025-5777","vendorProject":"Citrix","product":"NetScaler ADC and Gateway","vulnerabilityName":"Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability","dateAdded":"2025-07-10","shortDescription":"Citrix NetScaler ADC and Gateway contain an out-of-bounds read vulnerability due to insufficient input validation. This vulnerability can lead to memory overread when the NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server.","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":"2025-07-11","knownRansomwareCampaignUse":"Known","notes":"https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX693420 ; https://nvd.nist.gov/vuln/detail/CVE-2025-5777","cwes":["CWE-125"],"year":2025,"state":"mapped","stale_reasons":[],"mappings":[{"domain":"enterprise","cve":"CVE-2025-5777","technique":"T1190","technique_name_at_mapping":"Exploit Public-Facing Application","mapping_type":"exploitation_technique","capability_group":"oob","comments":"This memory leak vulnerability in Citrix NetScaler/ADC Gateway devices can be leveraged by sending malicious authentication requests, leaking sensitive information.","references":["https://github.com/bughuntar/CVE-2025-5777"],"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-2025-5777","technique":"T1555","technique_name_at_mapping":"Credentials from Password Stores","mapping_type":"primary_impact","capability_group":"oob","comments":"This memory leak vulnerability in Citrix NetScaler/ADC Gateway devices can be leveraged by sending malicious authentication requests, leaking sensitive information.","references":["https://github.com/bughuntar/CVE-2025-5777"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"}],"techniques":[{"id":"T1190","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Exploit Public-Facing Application","name_at_mapping":"Exploit Public-Facing Application","renamed":false,"revoked_by":null,"mapping_types":["exploitation_technique"],"sigma_rule_count":149,"has_detection_strategy":true},{"id":"T1555","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Credentials from Password Stores","name_at_mapping":"Credentials from Password Stores","renamed":false,"revoked_by":null,"mapping_types":["primary_impact"],"sigma_rule_count":8,"has_detection_strategy":true}],"mapping_types":["exploitation_technique","primary_impact"],"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"}