Possible SolarWinds Web Help Desk Deserialization via JNDIConnectionPool Gadget (via webserver)
- Category
- webserver
- Author
- HuntRule
- Published
- 2026-09-27
- Updated
- 2026-09-27
ATT&CK techniques
Initial AccessRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule detects HTTP requests to the SolarWinds Web Help Desk WebObjects handler that carry the JSONRPC whitelist bypass parameter or a JNDIConnectionPool deserialization gadget referencing an LDAP path. This corresponds to CVE-2025-40551 exploitation. Legitimate help desk traffic does not include these gadget markers.
Reporting behind it
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
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