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CVE-2026-23863

Published: May 1, 2026Updated: May 11, 2026 Sources: CVE List NVDCWE-158
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.4%
Top 69.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:NI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-158

Affected Products

WhatsApp Desktop for WindowsFacebookCommunications
whatsappwhatsapp
Mobile App
Communications / messaging-chat
facebookcommercialUSCommunicationsaka meta, facebook inc.
whatsappcommercialCommunicationsaka whatsapp business, whatsapp desktop

Exploitability

Official Patch Available

References

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

Timeline

Published
May 1, 2026
Last Updated
May 11, 2026

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