CVE-2025-26399

Published Sep 23, 2025

Last updated 4 days ago

Exploit known CVSS critical 9.8

SolarWinds Web Help Desk

web application

Supply chain

Overview

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.
Source: psirt@solarwinds.com
NVD status: Analyzed
Products: web_help_desk

Risk scores

CVSS 3.1

Type: Primary
Base score: 9.8
Impact score: 5.9
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: CRITICAL

Known exploits

Data from CISA

Vulnerability name: SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
Exploit added on: Mar 9, 2026
Exploit action 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.

Weaknesses

psirt@solarwinds.com: CWE-502
nvd@nist.gov: CWE-502

Hype score is a measure of social media activity compared against trending CVEs from the past 12 months. Max score 100.

Hype score: 4

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:solarwinds:web_help_desk:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "46BAB832-25B8-4ED6-B209-759F4B470CCE",
            "versionEndIncluding": "12.8.6",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:solarwinds:web_help_desk:12.8.7:-:*:*:*:*:*:*",
            "matchCriteriaId": "B88A115F-EDE4-447D-A35B-902A4074824A",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.