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CVE-2025-40551SolarWinds Web Help Desk Deserialization of Untrusted Data Remote Code Execution Vulnerability
SolarWinds Web Help Desk was found to be susceptible to an untrusted data deserialization vulnerability that could lead to remote code execution, which would allow an attacker to run commands on the host machine. This could be exploited without authentication.
9.8 CRITICALEPSS 84.18%⚡ Known Exploited (CISA KEV)NVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 9.8 | CRITICAL | 3.1SolarWinds (CNA) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
CISA required action
⚡ Known exploited · remediation due Feb 6, 2026
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Details
- CVE ID
- CVE-2025-40551
- Status
- Analyzed
- Assigner (CNA)
- SolarWinds
- Published
- Jan 28, 2026
- Last modified
- 2026-10-07 17:55 UTC
- Weaknesses
- CWE-502 · Deserialization of Untrusted Data
Affected Products
As published by the CNA in the CVE record.
SolarWindsWeb Help Desk1 version range
- 12.8.8 HF1 and below
References
- documentation.solarwinds.com https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm
- solarwinds.com https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40551
- cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-40551