CVE-2026-26201

HighCVSS 7.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-362 CWE-663

Affected software

No affected versions have been published.

Timeline

Published: Feb 19, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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