CVE-2025-40536
KEVSolarWinds Web Help Desk Security Control Bypass Vulnerability
Description
SolarWinds Web Help Desk contains a security control bypass vulnerability that could allow an unauthenticated attacker to gain access to certain restricted functionality.
SolarWinds 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.
CVSS 3.1 vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HPublishedJan 28, 2026
Last modifiedJun 17, 2026
Added to KEVFeb 12, 2026
Remediation dueFeb 15, 2026
References
- documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htmRelease Notes
- solarwinds.com/trust-center/security-advisories/CVE-2025-40536Vendor Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-40536US Government Resource
- huntress.com/blog/active-exploitation-solarwinds-web-help-desk-cve-2025-26399Third Party Advisory
0 recent articles mention this CVE
78
Risk assessment · High
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 254 days
- CVSS
- 8.1 HIGH
- EPSS (30-day exploit probability)
- 73.6% · top 1% of all CVEs
- Weakness
- CWE-693
- Attack vector
- Network, remotely reachable
- Preconditions
- No privileges and no user interaction
Recommended actions
- 1.Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.