CVE-2026-26068 — emp3r0r 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 l…
Published: 2026-02-12 · CVSS: 9.3 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7