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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.

Scores

9.8
CVSS 9.8 out of 10, critical severity.
84.2%
EPSS 84.2% chance of exploitation in the next 30 days.

The facts

Published
28 January 2026
Last changed
17 June 2026
NVD status
Analyzed
Severity
Critical, CVSS 9.8 out of 10 (version 3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
Affects
  • solarwinds web help desk
Known exploited
Yes. CISA added it to the Known Exploited Vulnerabilities catalogue on 3 February 2026.
EPSS
84.2% chance of exploitation activity in the next 30 days (percentile 100).

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References