Risk Letters

Exploited vulnerability

CVE-2025-40551

TLP:CLEAR

SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability

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.

Facts

  • Vendor: SolarWinds
  • Product: Web Help Desk
  • CVSS: 9.8
  • EPSS (probability of exploitation within 30 days): 84.2 %
  • On CISA's Known Exploited Vulnerabilities list since: 3 February 2026
  • First known exploitation: 3 February 2026
  • CISA's deadline for US federal agencies: 6 February 2026
  • Weakness: CWE-502
  • First seen by Risk Letters: 3 February 2026

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD