Sentinel Keys Server CVEs and Security Vulnerabilities

CVE-2026-78402

Stack Buffer Overflow in Sentinel Keys Server

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.

CVSS 4.0 · 7.3 High EPSS < 1% KEV · Not listed

Vendors

Thalesgroup

Products

Sentinel Keys Server

CVE-2026-78403

Unauthenticated Stack Buffer Overflow in Sentinel Keys Server

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.

CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed