VULNERABILITY INTELLIGENCE

CVE-2026-26201

CVSS score7.5 HIGH
EPSS probability0.33%
CISA KEVNot currently listed
Published2026-02-19
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • security-advisories@github.com: CWE-362

Primary references