CVE-2026-23863

Description

An attachment spoofing issue in WhatsApp for Windows prior to v2.3000.1032164386.258709 could have allowed maliciously formatted documents with embedded NUL bytes in the filename to be shown in the application as one type of file but run as an executable when opened. We have not seen evidence of exploitation in the wild.

References

https://www.whatsapp.com/security/advisories/2026

https://www.facebook.com/security/advisories/cve-2026-23863

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3