CVE-2026-103594
CVE-2026-103594 · Fireware OS Stack Buffer Overflow in WireGuard Configuration Allows Remote Code Execution
This page contains facts from public vulnerability sources. Check the original advisory before updating.
A stack-based buffer overflow vulnerability in Fireware OS's WireGuard configuration processing allows a remote attacker that has man-in-the-middle TLS-decrypted access between the Firebox and WatchGuard Cloud to create a Denial of Service condition and potentially execute arbitrary code by tampering with a FireCloud Gateway configuration payload.
CVSS 9.5 · Critical · EPSS 0.4% · Public exploit · Fix available
- Published
- Updated
Affected products and versions
fireware os
- Versions
- ≥ 2026.2, < 2026.4: Affected (custom)
- ≥ 12.12, < 12.12.4: Affected (custom)
Update to 12.12.4; Update to 2026.4