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TI-2026-85571 Aliases CVE-2026-94395GHSA-8fgg-vqqx-jmfx

Stack buffer overflow in SafeNet Authentication Client token engine

Priority LOW 32CWE-121Published · Updated

Key facts

Attack vector
Physical
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

Thales SafeNet Authentication Client (SAC) SIS token engine, from 10.8 R7 through 10.9 R3 (build 10.9.7449), contains a stack-based buffer overflow (CWE-121) in its token processing. A malicious physical or software-emulated smart card can trigger it before authentication or PIN entry, causing denial of service or possibly arbitrary code execution with the privileges of the affected process.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

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).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0025 16th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ThalesSafenet Authentication Client SIS token engine10.8 R7 – 10.9 R3 (build 10.9.7449)—No fix listedCNA
  • Safenet Authentication Client SIS token engine VendorThales Affected 10.8 R7 – 10.9 R3 (build 10.9.7449) Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Thales SafeNet Authentication Client SIS token engine.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-11-05 Threatist record created from CVE-2026-94395
  2. 2026-11-05 CVSS score added · CISA ADP
  3. 2026-11-05 CISA SSVC decision points changed
  4. 2026-11-05 Priority changed: MEDIUM → LOW
  5. 2026-11-05 Alias added: GHSA-8fgg-vqqx-jmfx
  6. 2026-11-06 Affected versions changed · Red Hat
  7. 2026-11-06 CVSS score added · Red Hat

References

Advisory 1

  • TI-2021-12537 The Sentinel LDK Run-Time Environment installer (Versions 7.6 and prior) adds a firewall… CVSS 3.1CRITICAL 9.8
  • TI-2026-15119 SConnect: Native Host Unauthenticated Remote Code Execution Vulnerability CVSS 4.0CRITICAL 9.4
  • TI-2026-83334 Unauthenticated Stack Buffer Overflow in Sentinel Keys Server CVSS 4.0CRITICAL 9.3
  • TI-2026-05969 Vulnerability on Cryptobox external sharing feature CVSS 4.0MEDIUM 6.9
  • TI-2024-00179 Privilege Escalation in Thales SafeNet Sentinel HASP LDK CVSS 3.1HIGH 7.8
  • TI-2023-06413 Privilege Escalation in SafeNet Authentication Client CVSS 3.1HIGH 7.8
See all 24 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences