CVE-2026-26068
CRITICALemp3r0r <3.21.1 - Command Injection, Remote Code Execution
Title source: llmDescription
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.
Scores
CVSS v3
9.9
EPSS
0.0061
EPSS Percentile
69.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Classification
CWE
CWE-77
CWE-78
Status
published
Affected Products (1)
jm33-m0/emp3r0r
< 3.21.1
Timeline
Published
Feb 12, 2026
Tracked Since
Feb 18, 2026