CVE-2025-40553
CRITICALCVSS v3
9.8
CRITICAL
EPSS Score
14.9%
exploit probability
CISA KEV
No
known exploited
Exploitation
—
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.
Technical Details
- CVSS v3 Vector
- 3.1
- Published
- 1/28/2026
- Last Modified
- 2/26/2026
Frequently Asked Questions
What is CVE-2025-40553?
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-2025-40553 actively exploited?
Active exploitation of CVE-2025-40553 has not been confirmed. The EPSS score is 14.9%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2025-40553?
CVE-2025-40553 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string 3.1.
Is CVE-2025-40553 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.