Jm33 M0 Emp3R0R vulnerabilities
3 vulnerabilities
Known vulnerabilities in Jm33 M0 Emp3R0R, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.
PrioritiseCVE-2026-61554jm33-m0 · emp3r0r +1 moreemp3r0r has an unauthenticated HTTP Polling DoSemp3r0r 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.CVSS7.5HighEPSS0.71%PrioritiseCVE-2026-26201jm33-m0 · emp3r0r +1 moreemp3r0r Affected by Concurrent Map Access DoS (panic/crash)emp3r0r is a C2 designed by Linux users for Linux environments. Prior to version 3.21.2, multiple shared maps are accessed without consistent synchronization across goroutines. Under concurrent activity, Go runtime can trigger `fatal error: concurrent map read and map write`, causing C2 process crash (availability loss). Version 3.21.2 fixes this issue.CVSS7.5HighEPSS0.33%PrioritiseCVE-2026-26068jm33-m0 · emp3r0remp3r0r Agent-Controlled Metadata to Operator RCE (tmux Command Injection)emp3r0r is a stealth-focused C2 designed by Linux users for Linux environments. Prior to 3.21.1, untrusted agent metadata (Transport, Hostname) is accepted during check-in and later interpolated into tmux shell command strings executed via /bin/sh -c. This enables command injection and remote code execution on the operator host. This vulnerability is fixed in 3.21.1.CVSS9.9CriticalEPSS3.79%