Unrated severityNVD Advisory· Published Feb 12, 2026· Updated Feb 13, 2026
emp3r0r Agent-Controlled Metadata to Operator RCE (tmux Command Injection)
CVE-2026-26068
Description
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.
Affected products
1- jm33-m0/emp3r0rv5Range: < 3.21.1
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
3- github.com/jm33-m0/emp3r0r/commit/0cd64e4a26e7839a9a54bca3d756a665fcb7fda0mitrex_refsource_MISC
- github.com/jm33-m0/emp3r0r/releases/tag/v3.21.1mitrex_refsource_MISC
- github.com/jm33-m0/emp3r0r/security/advisories/GHSA-h5p4-4xp4-vjppmitrex_refsource_CONFIRM
News mentions
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