Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since February 3, 2026.
CVE-2025-40551
SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
Added to KEV February 3, 2026
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2025-40551
- CWE
- CWE-502
- Affected products
- Web Help Desk · SolarWinds Web Help Desk · SolarWinds
What happened
SolarWinds Web Help Desk contains a deserialization of untrusted data 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.
What it means for your business
SolarWinds Web Help Desk is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2025-40551). SolarWinds Web Help Desk contains a deserialization of untrusted data 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. CISA remediation due date: 2026-02-06. If you need help checking exposure, call (864) 335-9223.
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.
CISA due date: February 6, 2026
Sources
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