Vulnerability intelligence
CVE-2025-26399
SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
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.
CVSS Score
9.8
Critical
EPSS — Exploit Probability
31%
Riskier than 97% of all CVEs
Exploitation
Confirmed in the wild
Used in ransomware campaigns
Remediation
Patch available
Federal deadline 2026-03-12
CISA 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. Deadline for federal agencies: 2026-03-12.
1 article across 1 outlet · first covered Apr 20, 2026 · latest Apr 20, 2026
Coverage timeline
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Hackers Abuse QEMU for Defense Evasionwww.securityweek.com · Apr 20, 2026