Is CVE-2026-78402 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-78402?

CVE-2026-78402 has a CVSS v3 severity of HIGH (7.8).

Back

CVE-2026-78402

Description

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.