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CVE Vulnerability Details :
CVE-2026-26201
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-19 Feb, 2026 | 19:21
Updated At-19 Feb, 2026 | 21:22
Rejected At-
▼CVE Numbering Authority (CNA)
emp3r0r Affected by Concurrent Map Access DoS (panic/crash)

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.

Affected Products
Vendor
jm33-m0
Product
emp3r0r
Versions
Affected
  • < 3.21.2
Problem Types
TypeCWE IDDescription
CWECWE-362CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWECWE-663CWE-663: Use of a Non-reentrant Function in a Concurrent Context
Type: CWE
CWE ID: CWE-362
Description: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Type: CWE
CWE ID: CWE-663
Description: CWE-663: Use of a Non-reentrant Function in a Concurrent Context
Metrics
VersionBase scoreBase severityVector
4.07.0HIGH
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
Version: 4.0
Base score: 7.0
Base severity: HIGH
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
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/jm33-m0/emp3r0r/security/advisories/GHSA-f5p9-j34q-pwcc
x_refsource_CONFIRM
https://github.com/jm33-m0/emp3r0r/commit/ea4d074f081dac6293f3aec38f01def5f08d5af5
x_refsource_MISC
https://github.com/jm33-m0/emp3r0r/releases/tag/v3.21.2
x_refsource_MISC
Hyperlink: https://github.com/jm33-m0/emp3r0r/security/advisories/GHSA-f5p9-j34q-pwcc
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/jm33-m0/emp3r0r/commit/ea4d074f081dac6293f3aec38f01def5f08d5af5
Resource:
x_refsource_MISC
Hyperlink: https://github.com/jm33-m0/emp3r0r/releases/tag/v3.21.2
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found