# CVE-2026-78495: WatchGuard Dimension server-side request forgery in Remote Backup Connection Test

Source: https://junglewise.ai/threats/cve-2026-78495-watchguard-dimension-server-side-request-forgery-in-remote-backup  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-28. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-78495 · Severity: info · CVSS 5.3 · Published 2026-08-28

WatchGuard Dimension is a backup and disaster recovery management platform used by organizations to protect critical business data. A server-side request forgery vulnerability in its Remote Backup Connection Test feature allows an authenticated administrator to probe and enumerate network services on adjacent systems, potentially revealing infrastructure details and exposed services that could be targeted for further attacks.

Technologies: [Watchguard Dimension](https://junglewise.ai/threats/technologies/dimension). Vendors: [Watchguard](https://junglewise.ai/threats/vendors/watchguard).

## Quick answers

**Is CVE-2026-78495 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-78495 being exploited in the wild.

**How severe is CVE-2026-78495?** Informational severity, with a CVSS score of 5.3, published 28 August 2026.

**Which products and versions are affected?** Watchguard Dimension >=2.0, <2.3.1.

**Is there a fix for CVE-2026-78495?** A patch was published on 2026-08-27: Fixed in Dimension 2.3.1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-78495 attacked?** It is attacked over the network or from the adjacent network, in a network appliance.

**Am I affected by CVE-2026-78495?** 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 SSRF vulnerability (CWE-918) exists in WatchGuard Dimension's Remote Backup Connection Test configuration feature. An authenticated user with privileged administrative access can craft malicious requests that cause the Dimension server to make outbound connections to arbitrary internal network addresses and ports, allowing them to enumerate and probe adjacent network services. The vulnerability requires existing authentication and administrative privileges. A fix is available in Dimension version 2.3.1 and later. The vulnerability has not been observed in active exploitation as of the advisory publication date.

## Affected products

- WatchGuard Dimension >=2.0, <2.3.1

## Timeline

- 2026-08-27: disclosed
- 2026-08-27: patched: Fixed in Dimension 2.3.1

## References

- [https://psirt.watchguard.com/CVE-2026-78495](https://psirt.watchguard.com/CVE-2026-78495)

## Related threats

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