Untrusted Data Deserialization Vulnerability in SolarWinds Web Help Desk
CVE-2025-40551

9.8CRITICAL

Key Information:

Vendor

Solarwinds
Status
Web Help Desk
Vendor
CVE Published:
28 January 2026

What is CVE-2025-40551?

SolarWinds Web Help Desk is vulnerable to an untrusted data deserialization flaw that could permit remote code execution. This weakness can be exploited by attackers to execute arbitrary commands on the affected host without requiring authentication, leading to significant security risks for organizations using this software. It is crucial for users to apply security patches and updates to safeguard their systems from potential attacks.

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Deploy the Patch

Affected Version(s)

Web Help Desk 12.8.8 HF1 and below

References

https://www.solarwinds.com/trust-center/security-advisori...
vendor-advisorypatch
https://documentation.solarwinds.com/en/success_center/wh...
release-notes

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jimi Sebree working with Horizon3.ai
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