Is CVE-2021-34426 actively exploited?

No active exploitation of CVE-2021-34426 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-34426 be exploited remotely?

No. CVE-2021-34426 requires local access to exploit.

What is the CVSS score of CVE-2021-34426?

CVE-2021-34426 has a CVSS score of 7.8 (HIGH).

HOME VULNERABILITIESCVE-2021-34426

HIGH

CVE-2021-34426

NVD-CWE-noinfoPublished: December 14, 2021· Updated: Jun 17, 2026

7.8

CVSS v3.1

Official Description

A vulnerability was discovered in the Keybase Client for Windows before version 5.6.0 when a user executed the "keybase git lfs-config" command on the command-line. In versions prior to 5.6.0, a malicious actor with write access to a user\'s Git repository could leverage this vulnerability to potentially execute arbitrary Windows commands on a user\'s local system.

NVD Source

Technical Analysis

CVE-2021-34426 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.