CVE-2025-40551
SolarWinds Web Help Desk Deserialization of Untrusted Data Remote Code Execution Vulnerability
CVSS v3
9.8
CRITICAL
EPSS Score
86.7 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
active
SSVC status
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.
CISA Known Exploited Vulnerability
- Date Added
- 2026-02-03
- Patch Due Date
- 2026-02-06
- Ransomware Use
- Unknown
Technical details
- CVSS v3 Vector
- 3.1
- Published
- 2026-01-28
- Last Modified
- 2026-02-04
Frequently asked questions
What is CVE-2025-40551?
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.
Is CVE-2025-40551 actively exploited?
Yes. CVE-2025-40551 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-02-06.
What is the CVSS score for CVE-2025-40551?
CVE-2025-40551 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string 3.1.
Is CVE-2025-40551 affecting your environment?
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