critical9.8Known exploited
CVE-2025-40551
SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
Exploited in the wild
This vulnerability is on the CISA Known Exploited Vulnerabilities list, added 2026-02-03. Federal due date: 2026-02-06.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Impact
SolarWinds Web Help Desk contains a deserialization of untrusted data 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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Solarwinds | Web Help Desk | before 2026.1 |
Weakness classification
References
- NVD record
- CVE.org record
- CISA KEV catalog
- https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm
- https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40551
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-40551