CVE-2026-26201
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.
Scoring
- Severity
- HIGH
- CVSS base score
- 7
- CVSS 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
- EPSS probability
- 0.29%
- CWE
- CWE-362, CWE-663
- Published
- 2026-02-19
- Last modified
- 2026-03-12
Affected products
- jm33-m0 emp3r0r
Weakness type
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