HIGH 7.5 NVD
CVE-2026-61554
emp3r0r is a C2 designed by Linux users for Linux environments. Prior to version 4.2.5, the `http_poll` C2 transport accepts attacker-controlled HTTP polling se
emp3r0r is a C2 designed by Linux users for Linux environments. Prior to version 4.2.5, the `http_poll` C2 transport accepts attacker-controlled HTTP polling sessions before CBOR `MsgAuth` authentication is completed. A remote unauthenticated attacker can create arbitrary polling sessions and send request bodies that are forwarded into the C2 dispatch path. This can consume server resources and trigger pre-auth C2 processing. Version 4.2.5 patches the issue.
References
- https://github.com/jm33-m0/emp3r0r/releases/tag/v4.2.5
- https://github.com/jm33-m0/emp3r0r/security/advisories/GHSA-4595-rvpx-4q34
This high severity vulnerability with a CVSS score of 7.5 was published on 2026-09-15 via NVD.
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