CVE-2026-121640 PUBLISHED

WatchGuard AuthPoint Gateway Capture-replay Allows Unauthorized Administrative Actions

Assigner: WatchGuard
Reserved: 03.11.2026 Published: 04.11.2026 Updated: 04.11.2026

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.

Metrics

CVSS 4.0

CVSS Vector: 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
CVSS Score: 9.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	High
Attack Requirements	Present	Availability	High	Availability	High
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	WatchGuard
Product	AuthPoint Authentication Gateway
Versions	Default: unaffected affected from 1.0 to 7.6.0 (excl.)

Exploits

WatchGuard is not aware of any exploitation of this vulnerability in the wild.

Solutions

AuthPoint Authentication Gateway 7.6.0

Credits

WatchGuard AI Security Research finder

References

https://psirt.watchguard.com/CVE-2026-121640

Problem Types

CWE-294 CWE