CVE-2026-121640: critical vulnerability in WatchGuard AuthPoint Authentication Gateway
WatchGuard AuthPoint Gateway Capture-replay Allows Unauthorized Administrative Actions
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.1epss 0.5%
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.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H
Affected products
WatchGuard · AuthPoint Authentication GatewayRelated CVEs — WatchGuard AuthPoint Authentication Gateway
In the same product, most dangerous first.
CVE-2026-121639CRITICALWatchGuard AuthPoint Gateway Improper Authentication Allows Unauthenticated Denial of ServiceEPSS 0.7%CVE-2026-95676HIGHAuthPoint Gateway Improper Authentication in LDAP Sync Allows First-Factor Authentication BypassEPSS 0.4%CVE-2026-121638CRITICALWatchGuard AuthPoint Gateway Improper Certificate Validation Allows Man-in-the-Middle AttacksEPSS 0.3%CVE-2026-121637HIGHWatchGuard AuthPoint Gateway Improper HMAC Validation in LDAP Authentication Callback Allows Forged Authentication ResultsEPSS 0.3%