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CVE Vulnerability Details :
CVE-2026-26068
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-12 Feb, 2026 | 22:01
Updated At-12 Feb, 2026 | 22:01
Rejected At-
▼CVE Numbering Authority (CNA)
emp3r0r Agent-Controlled Metadata to Operator RCE (tmux Command Injection)

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
Vendor
jm33-m0
Product
emp3r0r
Versions
Affected
  • < 3.21.1
Problem Types
TypeCWE IDDescription
CWECWE-77CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWECWE-78CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Type: CWE
CWE ID: CWE-77
Description: CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
Type: CWE
CWE ID: CWE-78
Description: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Metrics
VersionBase scoreBase severityVector
4.09.3CRITICAL
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
Version: 4.0
Base score: 9.3
Base severity: CRITICAL
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
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/jm33-m0/emp3r0r/security/advisories/GHSA-h5p4-4xp4-vjpp
x_refsource_CONFIRM
https://github.com/jm33-m0/emp3r0r/commit/0cd64e4a26e7839a9a54bca3d756a665fcb7fda0
x_refsource_MISC
https://github.com/jm33-m0/emp3r0r/releases/tag/v3.21.1
x_refsource_MISC
Hyperlink: https://github.com/jm33-m0/emp3r0r/security/advisories/GHSA-h5p4-4xp4-vjpp
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/jm33-m0/emp3r0r/commit/0cd64e4a26e7839a9a54bca3d756a665fcb7fda0
Resource:
x_refsource_MISC
Hyperlink: https://github.com/jm33-m0/emp3r0r/releases/tag/v3.21.1
Resource:
x_refsource_MISC
Details not found