High 7.5Published Feb 19, 2026

CVE-2026-26201emp3r0r is a C2 designed by Linux users for Linux environments.

Updated under an hour ago (2026-10-19 07:00 UTC)

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It affects jm33-m0 emp3r0r. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for jm33-m0 emp3r0r

Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-362, CWE-663
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

jm33-m0 emp3r0r jm33-m0:emp3r0r	before 3.21.2	NVD

References

https://github.com/jm33-m0/emp3r0r/commit/ea4d074f081dac6293f3aec38f01def5f08d5af5patch
https://github.com/jm33-m0/emp3r0r/releases/tag/v3.21.2product, release-notes
https://github.com/jm33-m0/emp3r0r/security/advisories/GHSA-f5p9-j34q-pwccexploit, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.