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 may cause 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).
History

Fri, 06 Nov 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 06 Nov 2026 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Thalesgroup safenet Authentication Client
Vendors & Products Thalesgroup safenet Authentication Client

Fri, 06 Nov 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Thu, 05 Nov 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Thu, 05 Nov 2026 18:30:00 +0000

Type Values Removed Values Added
Description 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 may cause 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).
Title Stack-based buffer overflow in SafeNet Authentication Client SIS token engine
First Time appeared Thalesgroup
Thalesgroup safenet Authentication Client Sis Token Engine
Weaknesses CWE-121
CWE-1284
CWE-787
CPEs cpe:2.3:a:thalesgroup:safenet_authentication_client_sis_token_engine:*:*:windows:*:*:*:*:*
Vendors & Products Thalesgroup
Thalesgroup safenet Authentication Client Sis Token Engine
References
Metrics cvssV4_0

{'score': 7, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: THA-PSIRT

Published: 2026-11-05T18:12:54.173Z

Updated: 2026-11-05T19:08:41.066Z

Reserved: 2026-09-21T13:29:20.497Z

Link: CVE-2026-94395

cve-icon Vulnrichment

Updated: 2026-11-05T19:06:11.781Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-05T19:17:28.617

Modified: 2026-11-06T21:33:01.183

Link: CVE-2026-94395

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-11-05T18:12:54Z

Links: CVE-2026-94395 - Bugzilla