CVE catalog
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 to be shown in the ap
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.53% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | Not reported | 2.3000.1032164386.258709 | fixed | |
| Cpe | Not reported | 2.3000.1032164386.258709 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | cpe | Not reported | 2.3000.1032164386.258709 | Not reported | Not reported | Not reported | |
| Cpe | cpe | Not reported | 2.3000.1032164386.258709 | Not reported | NVD-CVE-2026-23863 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-23863]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1361.json]
- [https://www.facebook.com/security/advisories/cve-2026-23863]
- [https://www.whatsapp.com/security/advisories/2026]
[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)]