Known vulnerability record
CVE-2025-26399
SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
Summary
SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
SolarWinds Web Help Desk contain a deserialization of untrusted data vulnerability in AjaxProxy that could allow an attacker to run commands on the host machine.
Signals
Keep the signals separate
CVSS severitycriticalScore 9.8 · source SolarWinds
EPSS probability88.3%Probability of exploitation in the next 30 days; not severity
CISA KEVKnown exploitedAdded 2026-03-09
Ransomware useknownPreserved as known / unknown, not a truthy default
Timeline
Dates and provenance
- CVE published
- 2025-09-23
- CVE modified
- 2026-08-04
- KEV date added
- 2026-03-09
- Dataset fetched
- 2026-08-21T03:54:59.577Z
Sources
Original records
- https://www.cve.org/CVERecord?id=CVE-2025-26399 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2025-26399 ↗
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-26399 ↗
Version history: normalized permanent page created 2026-08-20. Machine-enriched fields remain source-attributed.