CVE-2026-103594
A stack-based buffer overflow vulnerability in Fireware OS's WireGuard configuration processing…
- Risk score
- 62/100
- CVSS
- 9.5 v4.0
- Published
- 27 Oct 2026
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What to know
- What it is
- 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 …
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 9.5 critical
- Remotely exploitable without logging in
References
Original description
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.
Last activity 27 Oct 2026. Patch Forecast updates every hour.