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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.

Scores

9.8
CVSS 9.8 out of 10, critical severity.
68%
EPSS 68% chance of exploitation in the next 30 days.

The facts

Published
28 January 2026
Last changed
17 June 2026
NVD status
Modified
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
Not in the CISA Known Exploited Vulnerabilities catalogue in this build.
EPSS
68.0% chance of exploitation activity in the next 30 days (percentile 99).

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References