CVE-2025-40536
SolarWinds — SolarWinds Web Help Desk Security Control Bypass Vulnerability
SolarWinds · CWE-693 · in CISA KEV since 2026-02-12
EVRS 83 of 100 Urgent
Patch This Cycle
Rank 530 of 2,960 tracked
Why it scores 83
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and an EPSS probability of 0.736.
- CISA KEVApplied
- RansomwareDid not apply
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
Patch or fixed version identifiedCISA required action
- documentation.solarwinds.com/…/whd_2026-1_release_notes.htm
- www.solarwinds.com/…/CVE-2025-40536
- nvd.nist.gov/…/CVE-2025-40536
Fixed in
web help desk: update to 2026.1 or later
Affected versions
- web help desk
< 2026.1
Remediation
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Fixed versions from NVD.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 9.8 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.736 (99.47th pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Unknown or none | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2026-02-15 · CISA federal deadline · Overdue by 8 months | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | Public module exists | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 8.1 (v3.1), assigned by SolarWinds. | Listed | ENISA EUVD |
Description
NVDSolarWinds Web Help Desk was found to be susceptible to a security control bypass vulnerability that if exploited, could allow an unauthenticated attacker to gain access to certain restricted functionality.
What CISA says to do
- documentation.solarwinds.com/…/whd_2026-1_release_notes.htm
- www.solarwinds.com/…/CVE-2025-40536
- nvd.nist.gov/…/CVE-2025-40536
Public module
Metasploit lists a public great-rank module for this CVE: SolarWinds Web Help Desk unauthenticated RCE (multi/http/solarwinds_webhelpdesk_rce). A module existing is not the same as active exploitation; see metasploit.com.