Attachment spoofing in WhatsApp for Desktop (Windows) - CVE-2026-23863

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Main Vulnerability Database Vulnerabilities #VU130231

Attachment spoofing in WhatsApp for Desktop (Windows) - CVE-2026-23863

Published: May 6, 2026


Vulnerability identifier: #VU130231
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-23863
CWE-ID: CWE-451
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
WhatsApp for Desktop (Windows)
Software vendor:
WhatsApp

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of attachments with embedded NUL bytes in the filename. A remote attacker can force the application to show a file to be of one type but once clicked will run as an executable, leading to a potential system compromise. 


Remediation

Install updates from vendor's website.

External links