CVE-2026-61554

HIGHCVSS 7.5

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.

Published 2026-09-15 · last modified 2026-09-15

Full record at NVD ↗

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Ncerio by BeyondNets · data from NVD, CISA KEV, EPSS.