WatchGuard AuthPoint Gateway Capture-replay Allows Unauthorized Administrative Actions
Affects AuthPoint Authentication Gateway from 1.0 before 7.6.0, where a request captured between gateway components can be replayed. No vendor rating is given, so only the CVSS score of 9.1 applies. Fixed in 7.6.0.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Exploited
- No known exploitation
- Fix
- Fixed in 7.6.0
- Who is exposed
- Not reported
Do first: Upgrade to a fixed version: 7.6.0.
- Exploitation0/40No signal
- Exposure17/25No login or user action needed, reachable over the network without a login · Data gap: Advisories don't say whether default setups are affected
- Reach?/20Reach: unknown (data gap). No tracked technology or package matched
- Severity9.1/10CVSS 9.1
- No patch0/5No signal
What would change the score
- Would score about 71 if added to CISA KEV
- Would score about 66 if CISA's SSVC rates exploitation active
- Would score about 31 if advisories confirm default setups are exposed
CVE-2026-121640 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 9.1 (critical) and affects AuthPoint Authentication Gateway; fixed in 7.6.0.
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- Published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 26/100 · provisional
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Unclear
- Fix
- Fixed in 7.6.0
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
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.
What to do
Upgrade to a fixed version: 7.6.0.
Timeline
- CVE published
- First seen by cve.now
- Posted on X by cve.now
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- WatchGuard AuthPoint Authentication Gateway
From 1.0 · fixed in 7.6.0
Evidence 1
- Advisory
Corrections
None so far.
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Questions about CVE-2026-121640
Is CVE-2026-121640 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
What does this mean?
An attacker who has observed a legitimate request between AuthPoint Gateway components can capture it and replay it later. The replayed request can carry out unauthorized administrative actions, including disrupting authentication services.Source: psirt.watchguard.com
Which versions are affected by CVE-2026-121640?
AuthPoint Authentication Gateway: from 1.0 before 7.6.0.Source: cve.now feed data
Am I affected, and how do I check?
The advisory covers AuthPoint Authentication Gateway versions 1.0 or later and earlier than 7.6.0. The attacker must first have observed a legitimate request between gateway components. The facts do not name a specific version command or setting to check, so compare the installed version against that range.Source: psirt.watchguard.com
How do I fix CVE-2026-121640?
Upgrade AuthPoint Authentication Gateway to 7.6.0, the listed fixed version.Source: psirt.watchguard.com