{"id":"CVE-2026-94395","title":"Stack-based buffer overflow in SafeNet Authentication Client SIS token engine","summary":"A stack-based buffer overflow in Thales SafeNet Authentication Client (SAC) SIS token engine processing can be triggered by a malicious physical or software-emulated smart card. The issue can occur before authentication or PIN entry and …","severity":"high","cvss":7,"cvssVector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","cvssSource":"cna","cwe":["CWE-1284","CWE-787","CWE-121"],"vendor":"Thalesgroup","product":"Safenet Authentication Client SIS token engine","affected":["safenet_authentication_client_sis_token_engine >= 10.8 R7 <= 10.9 R3 (build 10.9.7449)"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-11-05T19:08:37.663004Z"},"published":"2026-11-05","updated":"2026-11-05","sourceUpdated":"2026-11-05T19:08:41.066Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-94395","references":[{"url":"https://supportportal.thalesgroup.com/csm?id=kb_article_view&sys_kb_id=7786064a2b905350cdc1f87df291bf92&sysparm_article=KB0031250"}],"tags":["cve.org"],"ingestedAt":"2026-11-05T22:38:31.511Z","slug":"CVE-2026-94395","body":"## Overview\n\nA stack-based buffer overflow in Thales SafeNet Authentication Client (SAC) SIS token engine processing can be triggered by a malicious physical or software-emulated smart card. The issue can occur before authentication or PIN entry and may\ncause a denial of service or potentially arbitrary code execution with the privileges of the affected process. Affected releases start with SAC 10.8 R7 and include SAC 10.9 R3 GA (build 10.9.7449).\n\n## Affected\n\n- `safenet_authentication_client_sis_token_engine >= 10.8 R7 <= 10.9 R3 (build 10.9.7449)`\n\n## Remediation\n\nUpgrade to SafeNet Authentication Client 10.9 R3 Post GA (build 10.9.7954) or later.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}