CVE-2026-23863

MediumCVSS 6.5/10Last modified Oct 26, 2026

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-158

Affected software

Vendor	Product	Versions
Facebook	WhatsApp Desktop for Windows	>= 2.3000.*.252500, < 2.3000.1032164386.258709

References

https://www.facebook.com/security/advisories/cve-2026-23863Third Party Advisory
https://www.whatsapp.com/security/advisories/2026Vendor Advisory

Timeline

Published: May 1, 2026
Last modified: Oct 26, 2026
NVD status: Analyzed

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