Is CVE-2026-13043 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-13043 being exploited in the wild.

How severe is CVE-2026-13043?

Informational severity, published 1 October 2026.

Which products and versions are affected?

Watchguard Endpoint Security before 8.00.26.0012.

Is there a fix for CVE-2026-13043?

Yes: fixed in Endpoint Security 8.00.26.0012. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-13043 attacked?

It is attacked with local access, in a network appliance.

Am I affected by CVE-2026-13043?

Check whether you run Watchguard Endpoint Security at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-13043: WatchGuard Endpoint Security missing authentication in kernel memory driver

CVE-2026-13043 · Severity: info · Published 2026-10-01

WatchGuard Endpoint Security includes a kernel driver (PSKMAD) that manages low-level memory access for the endpoint protection system. An authenticated local attacker can bypass the driver's security checks and read arbitrary kernel and process memory, potentially exposing sensitive system data and credentials. This could allow an attacker with local access to escalate privileges or extract confidential information from the system.

Vendors: Watchguard.

Quick answers

Is CVE-2026-13043 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-13043 being exploited in the wild.
How severe is CVE-2026-13043?: Informational severity, published 1 October 2026.
Which products and versions are affected?: Watchguard Endpoint Security before 8.00.26.0012.
Is there a fix for CVE-2026-13043?: Yes: fixed in Endpoint Security 8.00.26.0012. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-13043 attacked?: It is attacked with local access, in a network appliance.
Am I affected by CVE-2026-13043?: Check whether you run Watchguard Endpoint Security at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: Endpoint Security 8.00.26.0012

Technical details

The Kernel Memory Access Driver (PSKMAD) in WatchGuard Endpoint Security is missing authentication checks on critical functions (CWE-306) and may use hardcoded credentials (CWE-798), allowing a local authenticated attacker to bypass the access-control handshake. An attacker can issue arbitrary privileged commands to the driver to read kernel and process memory. A fix is available in Endpoint Security version 8.00.26.0012 and later.

Affected products

WatchGuard Endpoint Security before 8.00.26.0012

Timeline

2026-10-01: disclosed
2026-10-01: advisory

References

https://psirt.watchguard.com/CVE-2026-13043

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