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CVE-2026-121640

9.1 critical

Critical (9.1).

On this page
An Authentication Bypass by Capture-replay vulnerability in WatchGuard AuthPoint Gateway allows an attacker who has observed a legitimate request between AuthPoint Gateway components to replay it and perform unauthorized administrative actions, including disrupting authentication services.

Severity

CVSS 4.0

9.1 critical
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H
CISA's assessment (SSVC)
Exploitation: none · Automatable: no · Technical impact: partial, assessed 2026-11-04. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
CWE
CWE-294 Authentication Bypass by Capture-replay
OWASP Top 10
A07:2025 Authentication Failures
Published
Modified
Record from
the NVD, synced

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Versions

From the CNA's record in the CVE List.

ProductAffected
WatchGuard AuthPoint Authentication Gatewayfrom 1.0 before 7.6.0

Attack patterns (CAPEC)

  • CAPEC-60 Reusing Session IDs (aka Session Replay) Likelihood: High · Severity: High
  • CAPEC-94 Adversary in the Middle (AiTM) Likelihood: High · Severity: Very High
  • CAPEC-102 Session Sidejacking Likelihood: High · Severity: High
  • CAPEC-509 Kerberoasting Severity: High
  • CAPEC-555 Remote Services with Stolen Credentials Severity: Very High
  • CAPEC-561 Windows Admin Shares with Stolen Credentials
  • CAPEC-644 Use of Captured Hashes (Pass The Hash) Likelihood: Medium · Severity: High
  • CAPEC-645 Use of Captured Tickets (Pass The Ticket) Likelihood: Low · Severity: High
  • CAPEC-652 Use of Known Kerberos Credentials Likelihood: Medium · Severity: High
  • CAPEC-701 Browser in the Middle (BiTM) Likelihood: Medium · Severity: High

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

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