CVE-2026-78498Network attack vector

Adjacent service enumeration via email server test

Published Aug 27, 2026 · Updated Aug 27, 2026

Server-side request forgery in WatchGuard Dimension 2.0 through 2.3.0 allows remote authenticated users to enumerate adjacent network services. The Email Server Test configuration accepts an administrator-supplied server address and port, then directs Dimension to connect without blocking adjacent destinations. Privileged configuration access is required, and the observable impact is limited to discovering exposed services on systems reachable from the appliance.

CVSS severity5.1
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side request forgery in WatchGuard Dimension 2.0 through 2.3.0 allows remote authenticated users to enumerate adjacent network services. The Email Server Test configuration accepts an administrator-supplied server address and port, then directs Dimension to connect without blocking adjacent destinations. Privileged configuration access is required, and the observable impact is limited to discovering exposed services on systems reachable from the appliance.

The record

CVE
CVE-2026-78498
Published
Aug 27, 2026
Updated
Aug 27, 2026
Vendor
WatchGuard Technologies
Product
WatchGuard Dimension
Classifications
CWE-918, T1046
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.0 <2.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

WatchGuard Technologies · WatchGuard Dimensionversion=2.0 <2.3.1

Published CVSS scores

5.1WatchGuardCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1046Network Service Discovery

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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