TI-2021-13456 Aliases CVE-2021-34422 GHSA-rr44-rmpx-9h3q

Path traversal of file names in Keybase Client for Windows

MEDIUM 42CWE-22Published 2021-11-11 · Updated 2024-09-17

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
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

The Keybase Client for Windows before version 5.7.0 contains a path traversal vulnerability when checking the name of a file uploaded to a team folder. A malicious user could upload a file to a shared folder with a specially crafted file name which could allow a user to execute an application which was not intended on their host machine. If a malicious user leveraged this issue with the public folder sharing feature of the Keybase client, this could lead to remote code execution.

Why it matters now

EPSS 0.01383 72nd percentileScored 2026-11-07

Fix Fixed Keybase Client for Windows (Zoom Video Communications Inc): 5.7.0

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 5.7.0	5.7.0	Patch available	CNA

Keybase Client for Windows VendorZoom Video Communications, Inc. Affected before 5.7.0 Fixed in 5.7.0 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:keybase:keybase::::::windows::*	before 5.7.0	Vulnerable	Keybase

cpe:2.3:a:keybase:keybase:*:*:*:*:*:windows:*:* Versions before 5.7.0 Vulnerable ·Keybase

Remediation

Fix · CNA Keybase Client for Windows (Zoom Video Communications Inc) Fixed in 5.7.0

Timeline

2026-10-02 Threatist record created from CVE-2021-34422
2026-10-03 Alias added: GHSA-rr44-rmpx-9h3q

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