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.
History

Sat, 31 Oct 2026 22:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 30 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Unauthenticated Stack Buffer Overflow in Sentinel Keys Server
First Time appeared Thalesgroup
Thalesgroup sentinel Keys Server
Weaknesses CWE-121
CWE-862
CPEs cpe:2.3:a:thalesgroup:sentinel_keys_server:*:*:windows:*:*:*:*:*
Vendors & Products Thalesgroup
Thalesgroup sentinel Keys Server
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: THA-PSIRT

Published: 2026-10-30T19:12:56.080Z

Updated: 2026-10-30T20:02:33.210Z

Reserved: 2026-08-24T14:22:05.425Z

Link: CVE-2026-78403

cve-icon Vulnrichment

Updated: 2026-10-30T19:59:35.459Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-30T20:17:17.843

Modified: 2026-11-02T19:14:53.030

Link: CVE-2026-78403

cve-icon Redhat

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