CVE-2026-26068
Critical · 9.9CVSS
9.9
EPSS
4.1%
Published
Feb 12, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
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