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    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.

    Published:Feb 19, 2026
    Last Modified:Apr 17, 2026
    EPS:Feb 19, 2026
    EPSS Score:0.00046
    CVSS Score:7.5

    Affected Products

    Vendor
    Jm33-m0
    Product
    Emp3r0r

    Exploits

    https://github.com/jm33-m0/emp3r0r/security/advisories/GHSA-f5p9-j34q-pwcc

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High