CVE-2026-78402

HighCVSS 7.8

Published: 30/10/2026(UTC)Translated: 30/10/2026(UTC)NVD NIST

Summary

Stack-based buffer overflow and out-of-bounds write in Thales Sentinel Keys Server on Windows. The server does not check the length of the first field in the input message, allowing a local attacker to execute code as NT AUTHORITY\SYSTEM and escalate privileges.

Risk Assessment

A local attacker can gain highest system privileges, leading to full host compromise.

Recommendation

Update Sentinel Keys Server to version 1.3.8.0 or later.

Other vulnerabilities in Thales Sentinel Keys Server

CVE-2026-78403Critical
Stack-based buffer overflow and missing authorization in Thales Sentinel Keys Server on Windows. The server does not check the length of the first field in an HTTP request, allowing an attacker to send a crafted request and potentially achieve remote code execution as NT AUTHORITY\SYSTEM.

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS