Thalesgroup

CVE-2026-78402: Stack-based buffer overflow and out-of-bounds write vulnerability in Thales Sentinel Keys Server on Windows allows Overflow Buffers. Sentinel Keys Server do

CVE-2026-78402 Oct 30, 2026 Source: Vendor

Stack-based buffer overflow and out-of-bounds
write 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 input message. A local attacker may craft an input and send it to Sentinel
Keys Server. It may lead to code execution as NT AUTHORITY\SYSTEM enabling
local privilege escalation.

This issue affects Sentinel Keys Server: versions
lower than 1.3.8.0.

Source of record The credited names below are quoted verbatim from the vendor's own advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-78402

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CVE-2026-78402 BR2026-0000-040083 unclaimed

Credited as Matt Hetelson