ACTIVELY EXPLOITED
CVE-2025-40536: SolarWinds Web Help Desk Security Control Bypass Vulnerability
| Vendor | SolarWinds |
|---|---|
| Product | Web Help Desk |
| Actively exploited | Yes |
| Added to CISA KEV | 12 Feb 2026 |
| CISA federal deadline | 15 Feb 2026 |
| Weakness (CWE) | CWE-693 |
Required action (CISA's text)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Description (NVD)
SolarWinds Web Help Desk contains a security control bypass vulnerability that could allow an unauthenticated attacker to gain access to certain restricted functionality.
SOURCES
Other SolarWinds flaws
- CVE-2026-28318: SolarWinds Serv-U Uncontrolled Resource Consumption Vulnerability
- CVE-2025-26399: SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
- CVE-2025-40551: SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
- CVE-2024-28987: SolarWinds Web Help Desk Hardcoded Credential Vulnerability
- CVE-2024-28986: SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.