CVE-2026-13108: WatchGuard Dimension denial of service via TCP SYN flood

CVE-2026-13108 · Severity: info · CVSS 8.7 · Published 2026-08-28

WatchGuard Dimension is a logging and analytics service used to monitor security appliances and network activity. An attacker can flood the log listening service with a high volume of TCP connection attempts, overwhelming the service and rendering it unavailable to legitimate users. No exploitation in the wild has been observed, but the vulnerability requires a network firewall to be properly deployed to mitigate.

Technologies: Watchguard Dimension. Vendors: Watchguard.

Quick answers

Is CVE-2026-13108 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-13108 being exploited in the wild.
How severe is CVE-2026-13108?
Informational severity, with a CVSS score of 8.7, published 28 August 2026.
Which products and versions are affected?
Watchguard Dimension 2.0 through 2.3.0.
Is there a fix for CVE-2026-13108?
A patch was published on 2026-08-27: Version 2.3.1 available Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-13108 attacked?
It is attacked over the network.
Am I affected by CVE-2026-13108?
Check whether you run Watchguard Dimension 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.

Technical details

This is an uncontrolled resource consumption vulnerability (CWE-400) in the log listening service of WatchGuard Dimension. An attacker on the network can send a high volume of TCP SYN packets to trigger a denial-of-service condition by exhausting server resources. The vulnerability affects versions 2.0 through 2.3.0; the attack vector is network-based with no authentication requirement. Mitigation is available through upgrading to version 2.3.1 or deploying the Dimension server behind a firewall with rate-limiting protections.

Affected products

  • WatchGuard Dimension 2.0 through 2.3.0

Timeline

  • 2026-08-27: disclosed
  • 2026-08-27: patched: Version 2.3.1 available

References

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