Login Request a demo
Medium severity · published May 1, 2026
CVE-2026-23863
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…
6.5
CVSS
0.5%
EPSS
No
On KEV
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
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WD
WhatsApp Desktop for Windows · Facebook
2.3000.*.252500 before 2.3000.1032164386.258709 · source: vendor
WH
Whatsapp · Whatsapp
before 2.3000.1032164386.258709 · source: NVD
Affected product
WD
WhatsApp Desktop for Windows
Facebook
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-23863
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-23863
Third Party Advisory
https://www.facebook.com/security/advisories/cve-2026-23863
Vendor Advisory
https://www.whatsapp.com/security/advisories/2026