Logo
-

Byte Open Security

(ByteOS Network)

Log In

Sign Up

ByteOS

Security
Vulnerability Details
Registries
Custom Views
Weaknesses
Attack Patterns
Filters & Tools
Vulnerability Details :

CVE-2026-26201

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-19 Feb, 2026 | 19:21
Updated At-19 Feb, 2026 | 21:22
Rejected At-
Credits

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
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
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:19 Feb, 2026 | 20:25
Updated At:19 Feb, 2026 | 20:25

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.07.0HIGH
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Secondary
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-362Primarysecurity-advisories@github.com
CWE-663Primarysecurity-advisories@github.com
CWE ID: CWE-362
Type: Primary
Source: security-advisories@github.com
CWE ID: CWE-663
Type: Primary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/jm33-m0/emp3r0r/commit/ea4d074f081dac6293f3aec38f01def5f08d5af5security-advisories@github.com
N/A
https://github.com/jm33-m0/emp3r0r/releases/tag/v3.21.2security-advisories@github.com
N/A
https://github.com/jm33-m0/emp3r0r/security/advisories/GHSA-f5p9-j34q-pwccsecurity-advisories@github.com
N/A
Hyperlink: https://github.com/jm33-m0/emp3r0r/commit/ea4d074f081dac6293f3aec38f01def5f08d5af5
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/jm33-m0/emp3r0r/releases/tag/v3.21.2
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/jm33-m0/emp3r0r/security/advisories/GHSA-f5p9-j34q-pwcc
Source: security-advisories@github.com
Resource: N/A

Change History

0
Information is not available yet

Similar CVEs

0Records found
Details not found