CVE-2025-40553 Public exploit Critical · 9.8 EPSS 68.0%
SolarWinds Web Help Desk Deserialization of Untrusted Data Remote Code Execution Vulnerability
SolarWinds · Web Help Desk
Summary
The flaw is a deserialization of untrusted data vulnerability in the SolarWinds Web Help Desk product. An unauthenticated remote attacker can exploit it to execute arbitrary commands on the host machine, with no user interaction or special configuration required.
Official description · CVE.org
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.
Priority scorePatchfirst’s 0 to 100 ranking. It adds points for CISA KEV listing, ransomware use, EPSS, threat reports, public exploit code and CVSS. Every CVE page shows the breakdown. Breakdown
76.7 / 100
- Exploited
- Yes, in VulnCheck KEV
- Reports
- 0
- Tactics
- 0/15
Exploitation timelineDated milestones for a CVE: when it was disclosed, when exploit code became public, when exploitation was confirmed, and when threat reports named it.
First seen exploited 7 months after disclosure.
- Disclosedday 0
- First seen exploitedVulnCheck KEV evidence+7 mo
MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. techniques
No techniques linkedNo ATT&CK techniques are linked to this CVE yet. MITRE CTID has not mapped it, and no report passage in the corpus ties it to a technique.