CVE-2026-26201

HIGH

emp3r0r < 3.21.2 - Denial of Service via Concurrent Map Access Race Condition

Title source: llm
STIX 2.1

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.

References (3)

Core 3

Scores

CVSS v3 7.5
EPSS 0.0029
EPSS Percentile 20.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-362 CWE-663
Status published
Products (1)
jm33-m0/emp3r0r < 3.21.2
Published Feb 19, 2026
Tracked Since Feb 19, 2026