WatchGuard

CVE-2026-121637: An improper integrity validation vulnerability in WatchGuard AuthPoint Gateway's LDAP authentication callback allows a network attacker who has obtained a valid

CVE-2026-121637 Nov 4, 2026 Source: Vendor

An improper integrity validation vulnerability in WatchGuard AuthPoint Gateway's LDAP authentication callback allows a network attacker who has obtained a valid header signature to forge the authentication result and transaction identifier in the request body, resulting in unauthorized session outcomes.

Source of record The credited names below are quoted verbatim from the vendor's own advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-121637

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CVE-2026-121637 BR2026-0000-042272 unclaimed

Credited as WatchGuard AI Security Research