Critical severity9.9NVD Advisory· Published Feb 12, 2026· Updated Jun 17, 2026
CVE-2026-26068
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.
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Affected products
3- jm33-m0/emp3r0rv5Range: < 3.21.1
Patches
Vulnerability mechanics
References
3- github.com/jm33-m0/emp3r0r/commit/0cd64e4a26e7839a9a54bca3d756a665fcb7fda0nvdPatch
- github.com/jm33-m0/emp3r0r/security/advisories/GHSA-h5p4-4xp4-vjppnvdExploitVendor Advisory
- github.com/jm33-m0/emp3r0r/releases/tag/v3.21.1nvdProductRelease Notes
News mentions
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