CVE-2025-40551
SolarWinds Web Help Desk Deserialization of Untrusted Data Remote Code Execution Vulnerability
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-502 |
| Vendor | solarwinds |
| Product | web help desk |
| Published | Jan 28, 2026 |
| Last Updated | Feb 26, 2026 |
⚠️ Actively Exploited — Act Now
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
SolarWinds / Web Help Desk
12.8.8 HF1 and below
References
solarwinds.com: https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40551 documentation.solarwinds.com: https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm cisa.gov: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-40551
Credits
🔍 Jimi Sebree working with Horizon3.ai