CVE-2026-121638 Details
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.
A vulnerability allowing improper certificate validation has been identified in WatchGuard AuthPoint Gateway versions 1.0 through 7.5.9. This vulnerability allows an attacker with an on-path network position to intercept and modify communications between the AuthPoint Gateway and local authentication providers, such as those using RADIUS, LDAP, or ADFS.
Users can upgrade to WatchGuard AuthPoint Authentication Gateway version 7.6.0 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 4, 2026CISA-ADP
Assessed Nov 4, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://psirt.watchguard.com/CVE-2026-121638 | WatchGuard Technologies, Inc. | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-295 | Improper Certificate Validation | WatchGuard Technologies, Inc. |
Affected Products
| Product | Versions |
|---|---|
| WatchGuard AuthPoint Gateway | >= 1.0, < 7.6.0 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 4, 2026 | CVE Modified | CISA-ADP |
| Nov 4, 2026 | New CVE Received | WatchGuard Technologies, Inc. |