CVE-2026-23863

MEDIUM

6.5

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.

CVE Details

CVSS v3.1 Score6.5

SeverityMEDIUM

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published5/1/2026

Last Modified5/4/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-158

References

https://www.facebook.com/security/advisories/cve-2026-23863(cve-assign@fb.com)

https://www.whatsapp.com/security/advisories/2026(cve-assign@fb.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.