CVE-2025-40551

Analyzed
Published: 28 Jan 2026, 07:33
Last modified:26 Feb 2026, 15:04

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
v3.1 (cve.org)
EPSS Score
90.05% CRITICAL
90% probability +0.12%
KEV
Listed
CISA
1 listing
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

28 Jan 2026, 07:33
Published
Vulnerability first disclosed
03 Feb 2026, 00:00
Added to CISA KEV
SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
06 Feb 2026, 00:00
CISA Remediation Due
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
26 Feb 2026, 15:04
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 90.05%• Percentile: 100%

Techniques & Countermeasures

  • CWE-502•Deserialization of Untrusted Data

    The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected Systems

  • Unknown•Web Help Desk

    < 2026.1 | 12.8.8 HF1 and below

References (3)