CVE-2025-40551 kev in the critical feed json
SolarWinds Web Help Desk Deserialization of Untrusted Data Remote Code Execution Vulnerability
published 9mo ago modified last mo. also EUVD-2025-206426
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Exploited
- added 2026-02-03
- epss
- 84.2%
- EPSS 84.2% chance of exploitation in 30 days, percentile 99.6%
- public exploits
- 1
- Metasploit, plus a Nuclei check
Summary
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.
Patch / fix
cisa required action Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- solarwinds web_help_desk 2026.1
Is CVE-2025-40551 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerTimeline
- First public exploit (Metasploit exploit/multi/http/solarwinds_webhelpdesk_rce)
- Published
- Added to CISA KEV
- CISA SSVC: exploitation active
- CISA patch deadline
Known exploited
- Added
- 9mo ago
- Patch by
- 2026-02-06 (9mo ago)
- Ransomware
- Not known
- Required action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- Vendor, product
- SolarWinds, Web Help Desk
- CISA name
- SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
Ransomware
Groups reported to have exploited it in intrusions.
- Storm-2603 (Warlock) ransomware gang
reported by linkedin.com
Ransomware Vulnerability Matrix by BushidoUK (github.com/BushidoUK/Ransomware-Vulnerability-Matrix), reformatted per CVE. CC BY 4.0
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- yes
- Technical impact
- total
- Assessed
- 9mo ago
Exploit prediction
84.18% chance of exploitation in the next 30 days, higher than 99.6% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- Metasploit exploit/multi/http/solarwinds_webhelpdesk_rce SolarWinds Web Help Desk unauthenticated RCE metasploit exploit, great rank, 2026-01-28
- Nuclei template SolarWinds Web Help Desk < 2026.1 - Unauthenticated JNDI Injection RCE nuclei detection template
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- SolarWinds Web Help Desk
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
solarwinds.com
/trust-center/security-advisories/CVE-2025-40551
vendor-advisory, patch
-
documentation.solarwinds.com
/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm
release-notes
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-40551
government-resource, us-government-resource
Sources
- CVE List CVE-2025-40551
- NVD CVE-2025-40551
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.