CVE-2026-121637

CVE Enrichment

CVSS: 8.9 HIGH
EPSS: 0.26%
EPSS Percentile: 18.41%
CISA KEV: Not listed

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.

Technical Details

CVSS Version: 4.0
CNA / NVD Source: 5d1c2695-1a31-4499-88ae-e847036fd7e3
Published: 04-Nov-2026 22:17
Last Modified: 05-Nov-2026 02:17
EPSS Date: 2026-11-05
CWE: CWE-345

CVSS 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 /
                            E:X /
                            CR:X /
                            IR:X /
                            AR:X /
                            MAV:X /
                            MAC:X /
                            MAT:X /
                            MPR:X /
                            MUI:X /
                            MVC:X /
                            MVI:X /
                            MVA:X /
                            MSC:X /
                            MSI:X /
                            MSA:X /
                            S:X /
                            AU:X /
                            R:X /
                            V:X /
                            RE:X /
                            U:X

CNA Products / Version Status

WatchGuard · AuthPoint Authentication Gateway Source: CNA · 5d1c2695-1a31-4499-88ae-e847036fd7e3
Default status: unaffected

1.0 ≤ version < 7.6.0 — affected (semver)

References

5d1c2695-1a31-4499-88ae-e847036fd7e3

Last enrichment sync: 05-Nov-2026 22:16
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

CVE-2026-121638, and CVE-2026-121640) and a high-severity integrity validation bug (CVE-2026-121637) in AuthPoint Authentication Gateway. Cisco and WatchGuard Patch Flaws; SonicWall Leaves GMS Bugs Unfixed

CVE (8)

Vendors (4)

Products (6)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.