Quick answers
- Is CVE-2026-78500 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-78500 being exploited in the wild.
- How severe is CVE-2026-78500?
- Informational severity, with a CVSS score of 5.1, published 28 August 2026.
- Which products and versions are affected?
- Watchguard Dimension 2.0 to 2.3.0.
- Is there a fix for CVE-2026-78500?
- A patch was published on 2026-08-27: Fix available in Dimension 2.3.1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-78500 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-78500?
- 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
The vulnerability is a blind SSRF (CWE-918) combined with observable timing discrepancies (CWE-208) in WatchGuard Dimension's database test connection feature. An authenticated user with administrative privileges can craft requests that cause the Dimension server to make requests to arbitrary adjacent network systems, and differences in response timing can reveal whether services are running on those systems. The attack requires authentication and network reachability to the Dimension server, but no user interaction. Attackers can achieve reconnaissance of adjacent network infrastructure. The vulnerability is fixed in Dimension version 2.3.1.
Affected products
- WatchGuard Dimension 2.0 to 2.3.0
Timeline
- 2026-08-27: disclosed
- 2026-08-27: patched: Fix available in Dimension 2.3.1