Vulnerabilities / CVE-2025-40551

CVE-2025-40551

Published 2026-01-28 · published (not yet in NVD)

CVE-2025-40551

SolarWinds Web Help Desk Deserialization of Untrusted Data Remote Code Execution Vulnerability

Exploited in the wild: CISA added it to the Known Exploited Vulnerabilities catalog on 2026-02-03, with a fix-by date of 2026-02-06. Patch it first.

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

9.8 CRITICAL
CVSS 3.1 · CNA

84%
chance of exploitation in the next 30 days (EPSS; in the top 1% of all CVEs)

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.

Scores

9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCNA

Affected products

SolarWinds Web Help Desk: 12.8.8 HF1 and below

Weakness: CWE-502

2 references (advisories, patches, write-ups)

https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40551 · vendor-advisory, patch
https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm · release-notes

Sources: CVE.org, FIRST EPSS. Missing ones did not answer or have no record yet.

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