CVE-2026-121638
An Improper Certificate Validation vulnerability in WatchGuard AuthPoint Gateway allows an attacker…
- Risk score
- 60/100
- CVSS
- 9.1 v4.0
- Published
- 4 Nov 2026
Open in the live forecast Today's forecast
What to know
- What it is
- An Improper Certificate Validation vulnerability in WatchGuard AuthPoint Gateway allows an attacker with an on-path network position to intercept and modify communications between the AuthPoint Gateway and local authentication providers.
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
In the news
TL;DR
WatchGuard releases patches for five vulnerabilities, including CVE-2026-121638, a critical improper certificate validation bug in AuthPoint Gateway.
- WatchGuard releases patches for CVE-2026-121638, a critical improper certificate validation bug in AuthPoint Gateway.
- No information on exploitation in the wild.
- No information on scale or targeted victims.
- No workarounds or disagreements mentioned.
AI summary of 1 article.
Why it is Yellow
- CVSS 9.1 critical
- Remotely exploitable without logging in
References
Original description
An Improper Certificate Validation vulnerability in WatchGuard AuthPoint Gateway allows an attacker with an on-path network position to intercept and modify communications between the AuthPoint Gateway and local authentication providers.
Last activity 4 Nov 2026. Patch Forecast updates every hour.