CVE-2025-40551

SolarWinds Web Help Desk

Published 28 Jan 2026 · updated 17 Jun 2026 · Analyzed

9.8 Critical · CVSS 3.1, solarwinds.com

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 3 Feb 2026, with a remediation deadline of 6 Feb 2026 for US federal agencies.

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.

Description

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.

References

documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm · Release Notes
www.solarwinds.com/trust-center/security-advisories/CVE-2025-40551 · Vendor Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-40551 · US Government Resource