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CVE-2025-26399

SolarWinds Web Help Desk Deserialization of Untrusted Data Privilege Escalation Vulnerability

Published: Sep 23, 2025Updated: Nov 14, 2025 Sources: CVE List NVD BDUCWE-502
9.8CRITICAL
NVD MITRE
EPSS Score
88.3%
Top 0.2%
CISA KEV
Active Exploitation
Since Mar 9, 2026
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

SolarWinds Web Help Desk was found to be susceptible to an unauthenticated AjaxProxy deserialization remote code execution vulnerability that, if exploited, would allow an attacker to run commands on the host machine. This vulnerability is a patch bypass of CVE-2024-28988, which in turn is a patch bypass of CVE-2024-28986.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-502

Affected Products

SolarWinds
commercial·USaka solar winds
Web Help DeskOn-premWeb App
Enterprise Software / itsm-monitoring
SolarWinds Inc.
commercial·USaka access rights manager, solarwinds orion platform, serv-u file server
SolarWinds Web Help DeskOn-premWeb App
Enterprise Software / itsm-monitoring
and 1 more affected products View all →

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Mar 9, 2026
Remediation due:Mar 12, 2026

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Official Patch Available
Is your org exposed to CVE-2025-26399?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

3 techniques
Execution
Initial Access
View detailed technique mapping

References

https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_12-8-7-hotfix-1_release_notes.htm
documentation.solarwinds.com
https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-26399
solarwinds.com
https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_12-8-7-hotfix-1_release_notes.htm
documentation.solarwinds.com
and 4 more references View all →
News mentions
2

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