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CVE-2026-26201— emp3r0r Affected by Concurrent Map Access DoS (panic/crash)

Quick assessment

Affected
jm33-m0 emp3r0r
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

emp3r0r是Jimmy Mi个人开发者的一个Linux框架工具。 emp3r0r 3.21.2之前版本存在安全漏洞，该漏洞源于多个共享映射在goroutine间访问时缺乏一致的同步，可能导致并发映射读写错误和进程崩溃。

AI Predicted 5.9 Difficulty: Easy EPSS 0.46% · P38
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I. Basic Information for CVE-2026-26201

Vulnerability Information
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Vulnerability Title
emp3r0r Affected by Concurrent Map Access DoS (panic/crash)
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: CVE Program / CVE List V5
Vulnerability Title
emp3r0r 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
emp3r0r是Jimmy Mi个人开发者的一个Linux框架工具。 emp3r0r 3.21.2之前版本存在安全漏洞，该漏洞源于多个共享映射在goroutine间访问时缺乏一致的同步，可能导致并发映射读写错误和进程崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
jm33-m0 emp3r0r < 3.21.2 -

II. Public POCs for CVE-2026-26201

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III. Intelligence Information for CVE-2026-26201

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Patches & Fixes for CVE-2026-26201 (1)

Vendor Advisories for CVE-2026-26201 (1)

IV. Related Vulnerabilities

Same product: emp3r0r
Same vendor: jm33-m0
Same weakness: CWE-362

V. Comments for CVE-2026-26201

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