CVE-2026-61554
emp3r0r has an unauthenticated HTTP Polling DoS
HIGH 7.5EPSS 0.7%
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.
- Affected
- jm33-m0 · emp3r0r
- CVSS v3.1 GITHUB
- 7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS
- 0.71% chance of exploitation in the next 30 days, 53rd percentile
- Published
- 2026-09-15
- Updated
- 2026-09-16