CVE-2025-26400Network attack vector

Information disclosure via external XML entities

Published Jul 29, 2025 · Updated Jul 29, 2025

XXE in SolarWinds Web Help Desk 12.8.6 and earlier allows remote authenticated users to disclose information via crafted XML. SolarWinds identifies improper restriction of external entity references but has not published the affected parser, request path, or configuration key. Low-privilege access is normally required; local users can instead reach the condition by modifying server configuration files, and only confidentiality impact is reported.

CVSS severity6.5
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE in SolarWinds Web Help Desk 12.8.6 and earlier allows remote authenticated users to disclose information via crafted XML. SolarWinds identifies improper restriction of external entity references but has not published the affected parser, request path, or configuration key. Low-privilege access is normally required; local users can instead reach the condition by modifying server configuration files, and only confidentiality impact is reported.

The record

CVE
CVE-2025-26400
Published
Jul 29, 2025
Updated
Jul 29, 2025
Vendor
SolarWinds
Product
Web Help Desk
Classifications
CWE-611, CAPEC-201, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 29, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 29, 2025Record 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=12.8.6 and previous versions

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SolarWinds · Web Help Deskversion=12.8.6 and previous versions

Published CVSS scores

5.3SolarWindsCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
CAPEC-201XML Entity Linking
T1005Data from Local System

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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