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CRITICALCVE-2026-26068Published Modified CNA GitHub_M

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 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.

Metrics

CVSS v4.0
9.3
Severity
CRITICAL
Fixed in
—
Affected Products
1
Affected packages
  • jm33-m0 / emp3r0r
    < 3.21.1
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
References