jm33-m0 emp3r0r up to 3.21.1 on Linux race condition

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in jm33-m0 emp3r0r up to 3.21.1 on Linux. This impacts an unknown function. Executing a manipulation can lead to race condition. This vulnerability is registered as CVE-2026-26201. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic was found in jm33-m0 emp3r0r up to 3.21.1 on Linux. This vulnerability affects an unknown code block. The manipulation with an unknown input leads to a race condition vulnerability. The CWE definition for the vulnerability is CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. As an impact it is known to affect availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-26201 since 02/11/2026. The exploitation appears to be difficult. The attack can be initiated remotely. There are neither technical details nor an exploit publicly available.

Upgrading to version 3.21.2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch ea4d074f081dac6293f3aec38f01def5f08d5af5 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: emp3r0r 3.21.2
Patch: ea4d074f081dac6293f3aec38f01def5f08d5af5

Timelineinfo

02/11/2026 CVE reserved
02/19/2026 +8 days Advisory disclosed
02/19/2026 +0 days VulDB entry created
02/27/2026 +8 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-f5p9-j34q-pwcc
Status: Confirmed

CVE: CVE-2026-26201 (🔒)
GCVE (CVE): GCVE-0-2026-26201
GCVE (VulDB): GCVE-100-346960

Entryinfo

Created: 02/19/2026 21:45
Updated: 02/27/2026 08:52
Changes: 02/19/2026 21:45 (70), 02/27/2026 08:52 (11)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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