TI-2021-13460 Aliases CVE-2021-34426 GHSA-h72j-pmww-phww

Arbitrary command execution in Keybase Client for Windows

LOW 34Published 2021-12-14 · Updated 2024-09-17

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.00247 16th percentileScored 2026-11-07

Fix Fixed Keybase Client for Windows (Zoom Video Communications Inc): 5.6.0

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Zoom Video Communications, Inc.	Keybase Client for Windows	before 5.6.0	5.6.0	Patch available	CNA

Keybase Client for Windows VendorZoom Video Communications, Inc. Affected before 5.6.0 Fixed in 5.6.0 Patch available CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:keybase:keybase::::::::	before 5.6.0	Vulnerable	Keybase
cpe:2.3:o:microsoft:windows:-:::::::*	not specified by NVD	Running on	Microsoft

cpe:2.3:a:keybase:keybase:*:*:*:*:*:*:*:* Versions before 5.6.0 Vulnerable ·Keybase
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft

Remediation

Fix · CNA Keybase Client for Windows (Zoom Video Communications Inc) Fixed in 5.6.0

Timeline

2026-10-02 Threatist record created from CVE-2021-34426
2026-10-03 Alias added: GHSA-h72j-pmww-phww

References

Advisory 1

https://explore.zoom.us/en/trust/security/security-bulletin

TI-2026-18340 Zoom Node Deployments - Command Injection CVSS 3.1CRITICAL 9.9
TI-2017-11048 The ZoomLauncher binary in the Zoom client for Linux before 2.0.115900.1201 does not… CVSS 3.1HIGH 8.8
TI-2017-11047 Stack-based buffer overflow in the ZoomLauncher binary in the Zoom client for Linux… CVSS 3.1HIGH 8.8
TI-2020-04976 Path traversal in Zoom CVSS 3.1CRITICAL 9.8
TI-2026-38498 Zoom Workplace VDI Plugin for Windows - Improper Input Validation CVSS 3.1CRITICAL 9.8
TI-2021-13217 Improper certificate validation in Zoom Client for Meetings for Windows CVSS 3.1CRITICAL 9.8

See all 252 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences