CVE-2026-78403 (GCVE-0-2026-78403)

Vulnerability from cvelistv5 – Published: 2026-10-30 19:12 – Updated: 2026-10-30 20:02
VLAI
Title
Unauthenticated Stack Buffer Overflow in Sentinel Keys Server
Summary
Stack-based buffer overflow and missing authorization vulnerability in Thales Sentinel Keys Server on Windows allows Overflow Buffers. Sentinel Keys Server does not check the length of the first field in the HTTP request. An attacker may craft an HTTP request and send it to Sentinel Keys Server. It may lead to remote code execution as NT AUTHORITY\SYSTEM. This issue affects Sentinel Keys Server: versions lower than 1.3.8.0.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-30 19:59 UTC
CWE
  • CWE-121 - Stack-based buffer overflow
  • CWE-862 - Missing Authorization
Assigner
THA-PSIRT CNA under the THA-PSIRT root
CNA scorecard – unranked: 5 records in the last 180 days, 10 needed details
References
Impacted products
Vendor Product Version CPE status
Thalesgroup Sentinel Keys Server Affected: 0 , < 1.3.8.0 (custom)
    cpe:2.3:a:thalesgroup:sentinel_keys_server:*:*:windows:*:*:*:*:*
Create a notification for this product.
Credits
Matt Hetelson (matthew.hetelson@revolutional.com)
Show details on NVD website
To clipboard 

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