Vulnerability Report

CVE-2025-40551

RCE CISA KEV Active

Title: Untrusted Data Deserialization to RCE in SolarWinds Web Help Desk

RCE

Proof Of Concept

No public PoC currently indexed for CVE-2025-40551.

CWE Category CWE-502

Published Date Jan 28, 2026

Modified Date Feb 04, 2026

Exploit Status Not Found

Score 9.8 CVSS v3.1

Exploit Probability (EPSS)

86.97%

Vulnerability Summary

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.

Impacted Vendors

webhelpdesk 1

solarwinds 1

Reference Links

https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40551

CVSS v3.1

Source Entity [email protected]

Severity CRITICAL

9.8

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns