CVE-2026-93866
An integer overflow vulnerability in the WebSocket connection handling used by WatchGuard Fireware…
- Risk score
- 60/100
- CVSS
- 9.2 v4.0
- Published
- 27 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- An integer overflow vulnerability in the WebSocket connection handling used by WatchGuard Fireware OS's Access Portal allows a remote, unauthenticated attacker to write beyond the bounds of a heap buffer by sending a specially crafted request while the Access Portal feature is enabled.
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 9.2 critical
- Remotely exploitable without logging in
References
Original description
An integer overflow vulnerability in the WebSocket connection handling used by WatchGuard Fireware OS's Access Portal allows a remote, unauthenticated attacker to write beyond the bounds of a heap buffer by sending a specially crafted request while the Access Portal feature is enabled.
Last activity 27 Oct 2026. Patch Forecast updates every hour.