TI-2021-13455 Aliases CVE-2021-34421 GHSA-9j45-jfq7-hc4v

Retained exploded messages in Keybase Clients for Android and iOS

LOW 21CWE-459Published 2021-11-11 · Updated 2024-09-17

Key facts

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

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

Summary

The Keybase Client for Android before version 5.8.0 and the Keybase Client for iOS before version 5.8.0 fails to properly remove exploded messages initiated by a user if the receiving user places the chat session in the background while the sending user explodes the messages. This could lead to disclosure of sensitive information which was meant to be deleted from the customer's device.

Why it matters now

EPSS 0.00713 53rd percentileScored 2026-11-07

Fix Fixed Keybase Client for Android (Zoom Video Communications Inc): 5.8.0Keybase Client for iOS (Zoom Video Communications Inc): 5.8.0

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 Android	before 5.8.0	5.8.0	Patch available	CNA
Zoom Video Communications, Inc.	Keybase Client for iOS	before 5.8.0	5.8.0	Patch available	CNA

Keybase Client for Android VendorZoom Video Communications, Inc. Affected before 5.8.0 Fixed in 5.8.0 Patch available CNA
Keybase Client for iOS VendorZoom Video Communications, Inc. Affected before 5.8.0 Fixed in 5.8.0 Patch available CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:keybase:keybase:5.8.0:::::android::	5.8.0	Vulnerable	Keybase
cpe:2.3:a:keybase:keybase:5.8.0:::::iphone_os::	5.8.0	Vulnerable	Keybase

cpe:2.3:a:keybase:keybase:5.8.0:*:*:*:*:android:*:* Versions 5.8.0 Vulnerable ·Keybase
cpe:2.3:a:keybase:keybase:5.8.0:*:*:*:*:iphone_os:*:* Versions 5.8.0 Vulnerable ·Keybase

Remediation

Fix · CNA Keybase Client for Android (Zoom Video Communications Inc) Fixed in 5.8.0
Fix · CNA Keybase Client for iOS (Zoom Video Communications Inc) Fixed in 5.8.0

Timeline

2026-10-02 Threatist record created from CVE-2021-34421
2026-10-03 Alias added: GHSA-9j45-jfq7-hc4v

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