WatchGuard Endpoint Security Missing Authentication in Kernel Memory Access Driver Allows Arbitrary Kernel Memory Access
Priority MEDIUM 41CWE-306Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.
Summary
A missing authentication vulnerability in the Kernel Memory Access Driver (PSKMAD) used by WatchGuard endpoint security products allows a local, authenticated attacker to bypass the driver's access-control handshake and issue arbitrary privileged commands to the driver, resulting in disclosure of kernel and process memory.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00149 4th percentileScored 2026-11-07
Fix Fixed Endpoint Security (WatchGuard): 8.00.26.0012
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| WatchGuard | Endpoint Security | before 8.00.26.0012 | 8.00.26.0012 | Patch available | CNA |
- Endpoint Security VendorWatchGuard Affected before 8.00.26.0012 Fixed in 8.00.26.0012 Patch available CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:watchguard:endpoint_security:*:*:*:*:*:*:*:* | before 8.00.26.0012 | Vulnerable | WatchGuard |
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
- cpe:2.3:a:watchguard:endpoint_security:*:*:*:*:*:*:*:* Versions before 8.00.26.0012 Vulnerable ·WatchGuard
- cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
Remediation
- Fix · CNA Endpoint Security (WatchGuard) Fixed in 8.00.26.0012
Timeline
- 2026-10-02 Threatist record created from CVE-2026-13043
- 2026-10-03 Alias added: GHSA-33g3-qcrh-xvc2
- 2026-10-16 CVSS score added · NVD
References
Sources
- CVE-2026-13043 · CVE Program
- CVE-2026-13043 · NVD
- FIRST EPSS
- GHSA-33g3-qcrh-xvc2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences