CVE-2026-78403
Unauthenticated Stack Buffer Overflow in Sentinel Keys Server
- State
- Published
- Severity
- 9.3 Critical
- Published
- Oct 30, 2026
- Updated
- Oct 30, 2026
- Reserved
- Aug 24, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | 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 | THA-PSIRT |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | THA-PSIRT |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
Sentinel Keys ServerThalesgroup |
|
References
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