Vulnerability details
CVE-2025-40551
Actively exploited
SolarWinds Web Help Desk
SolarWinds Web Help Desk Deserialization of Untrusted Data Remote Code Execution Vulnerability
CVSS 3.1
9.8Critical
Official 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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.8Critical | 3.1 | CVEProject cvelistV5 (CNA) (SolarWinds) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| SolarWinds | Web Help Desk | 12.8.8 HF1 and below | CVEProject cvelistV5 (CNA) |
References and advisories
3- https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40551 vendor-advisorypatch
- https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm release-notes
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-40551 government-resource
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Details
- Published
- 2026-01-28
- Last updated
- 2026-10-07
- State
- Published
- Assigner (CNA)
- SolarWinds
- Kolun priority
- 90 · Critical
CISA KEV catalog
- Date added
- 2026-02-03
- Due date
- 2026-02-06
- Used in ransomware
- Unknown
Exploit prediction (EPSS)
84.18%
Probability of exploitation in 30 days
99.6%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Active
- Technical impact
- Total
Weaknesses (CWE)
- CWE-502Deserialization of Untrusted Data