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.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 25 Feb 2026 16:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:jm33-m0:emp3r0r:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 9.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}


Fri, 13 Feb 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Jm33-m0
Jm33-m0 emp3r0r
Vendors & Products Jm33-m0
Jm33-m0 emp3r0r

Fri, 13 Feb 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 12 Feb 2026 22:15:00 +0000

Type Values Removed Values Added
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.
Title emp3r0r Agent-Controlled Metadata to Operator RCE (tmux Command Injection)
Weaknesses CWE-77
CWE-78
References
Metrics cvssV4_0

{'score': 9.3, '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-02-13T17:17:57.660Z

Reserved: 2026-02-10T18:01:31.900Z

Link: CVE-2026-26068

cve-icon Vulnrichment

Updated: 2026-02-13T17:17:51.518Z

cve-icon NVD

Status : Analyzed

Published: 2026-02-12T22:16:06.507

Modified: 2026-02-25T15:47:26.743

Link: CVE-2026-26068

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-13T21:29:15Z

Weaknesses