CVE-2026-121638 WatchGuard AuthPoint Gateway Improper Certificate Validation Allows Man-in-the-Middle Attacks

CriticalCVSS 9.1

Published: 2026-11-04 16:44
Updated: 2026-11-04 20:20
Exploit status: No public exploit known

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.

Affected products

Product	Affected versions	Fixed in
WatchGuard AuthPoint Authentication Gateway	>= 1.0, < 7.6.0	7.6.0

References

psirt.watchguard.com vendor-advisory

CVSS v4.0

9.1 Critical

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

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

Weakness & likelihood

EPSS (exploitation probability, 30 days): Not available
CWE: CWE-295

Public exploit references

Metadata only. CVERadar never hosts or runs exploit code.

No public exploit references known.