CVE-2025-26399
CRITICALCVSS v3
9.8
CRITICAL
EPSS Score
16.9%
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
SolarWinds Web Help Desk was found to be susceptible to an unauthenticated AjaxProxy deserialization remote code execution vulnerability that, if exploited, would allow an attacker to run commands on the host machine. This vulnerability is a patch bypass of CVE-2024-28988, which in turn is a patch bypass of CVE-2024-28986.
Technical Details
- Published
- 9/23/2025
Frequently Asked Questions
What is CVE-2025-26399?
SolarWinds Web Help Desk was found to be susceptible to an unauthenticated AjaxProxy deserialization remote code execution vulnerability that, if exploited, would allow an attacker to run commands on the host machine. This vulnerability is a patch bypass of CVE-2024-28988, which in turn is a patch bypass of CVE-2024-28986.
Is CVE-2025-26399 actively exploited?
Active exploitation of CVE-2025-26399 has not been confirmed. The EPSS score is 16.9%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2025-26399?
CVE-2025-26399 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2025-26399 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.