Quick answers
- Is CVE-2026-121640 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-121640 being exploited in the wild.
- How severe is CVE-2026-121640?
- Informational severity, published 4 November 2026.
- Which products and versions are affected?
- Watchguard AuthPoint Authentication Gateway before 7.6.0.
- Is there a fix for CVE-2026-121640?
- Yes: fixed in AuthPoint Authentication Gateway 7.6.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-121640 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-121640?
- Check whether you run Watchguard AuthPoint Authentication Gateway at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: AuthPoint Authentication Gateway 7.6.0
Technical details
This is an authentication bypass vulnerability (CWE-294) exploiting capture-replay weakness in inter-component communication within AuthPoint Gateway. An attacker with network visibility can passively observe legitimate requests between AuthPoint Gateway components, replay them without modification, and gain administrative access to perform unauthorized actions including service disruption. The vulnerability affects versions prior to 7.6.0.
Affected products
- WatchGuard AuthPoint Authentication Gateway before 7.6.0
Timeline
- 2026-11-04: disclosed