CVE-2026-121640
An Authentication Bypass by Capture-replay vulnerability in WatchGuard AuthPoint Gateway allows an…
- 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 Authentication Bypass by Capture-replay vulnerability in WatchGuard AuthPoint Gateway allows an attacker who has observed a legitimate request between AuthPoint Gateway components to replay it and perform unauthorized administrative actions, including disrupting authentication services.
- 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 critical authentication flaws, including CVE-2026-121640, in AuthPoint Authentication Gateway.
- WatchGuard releases patches for four critical authentication issues in AuthPoint Authentication Gateway.
- CVE-2026-121640 is an Authentication Bypass by Capture-replay vulnerability.
- WatchGuard says they are not aware of any of these vulnerabilities being exploited in the wild.
- Cisco also released fixes for CVE-2026-76506, a high-severity vulnerability in UCS Central Software.
AI summary of 1 article.
Why it is Yellow
- CVSS 9.1 critical
- Remotely exploitable without logging in
References
Original description
An Authentication Bypass by Capture-replay vulnerability in WatchGuard AuthPoint Gateway allows an attacker who has observed a legitimate request between AuthPoint Gateway components to replay it and perform unauthorized administrative actions, including disrupting authentication services.
Last activity 4 Nov 2026. Patch Forecast updates every hour.