{"affected":[{"defaultStatus":"unaffected","product":"AuthPoint Authentication Gateway","source":"CNA: WatchGuard","vendor":"WatchGuard","versions":[{"lessThan":"7.6.0","status":"affected","version":"1.0","versionType":"semver"}]}],"cveId":"CVE-2026-121637","cwes":["CWE-345"],"description":"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.9,"severity":"high","source":"CNA: WatchGuard","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N","version":"4.0"}],"modifiedAt":1793803454610,"publishedAt":1793803454610,"references":[{"source":"CNA: WatchGuard","tags":["vendor-advisory"],"url":"https://psirt.watchguard.com/CVE-2026-121637"}],"remediation":[{"kind":"fix","source":"CNA: WatchGuard","text":"AuthPoint Authentication Gateway 7.6.0"}],"revision":"f70807b1e7764cb33a902419765051954cda00acc36276662219f36952ed1e4c","sources":[{"modifiedAt":1793803454610,"name":"CNA: WatchGuard","retrievedAt":1793805017582,"url":"https://www.cve.org/CVERecord?id=CVE-2026-121637"}],"ssvc":null,"status":"published","title":"WatchGuard AuthPoint Gateway Improper HMAC Validation in LDAP Authentication Callback Allows Forged Authentication Results","updatedAt":1793805017582}