emp3r0r is a C2 designed by Linux users for Linux environments. Prior to version 3.21.2, multiple shared maps are accessed without consistent synchronization across goroutines. Under concurrent activity, Go runtime can trigger `fatal error: concurrent map read and map write`, causing C2 process crash (availability loss). Version 3.21.2 fixes this issue.
History

Fri, 20 Feb 2026 01:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 19 Feb 2026 20:00:00 +0000

Type Values Removed Values Added
Description emp3r0r is a C2 designed by Linux users for Linux environments. Prior to version 3.21.2, multiple shared maps are accessed without consistent synchronization across goroutines. Under concurrent activity, Go runtime can trigger `fatal error: concurrent map read and map write`, causing C2 process crash (availability loss). Version 3.21.2 fixes this issue.
Title emp3r0r Affected by Concurrent Map Access DoS (panic/crash)
Weaknesses CWE-362
CWE-663
References
Metrics cvssV4_0

{'score': 7, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-02-19T21:22:50.955Z

Reserved: 2026-02-11T19:56:24.813Z

Link: CVE-2026-26201

cve-icon Vulnrichment

Updated: 2026-02-19T21:15:35.276Z

cve-icon NVD

Status : Received

Published: 2026-02-19T20:25:42.770

Modified: 2026-02-19T20:25:42.770

Link: CVE-2026-26201

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.