Disclosure summary
Apache ActiveMQ contains a deserialization of untrusted data vulnerability that may allow a remote attacker with network access to a broker to run shell commands by manipulating serialized class types in the OpenWire protocol to cause the broker to instantiate any class on the classpath.
CISA remediation guidance
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
The DFIR Report · RSS-f4b4343ae931d6fe727e22dcd9b55b0f5cd
Open original source · Updated Feb 23, 2026
Apache ActiveMQ Exploit Leads to LockBit Ransomware
CVE mention in publisher metadata; check the original affected versions.
Original records & references
PUBLISHED 2023-11-02T00:00:00-04:00
MODIFIED 2023-11-02T00:00:00-04:00
INGESTED 2026-10-06T11:42:58-04:00