Vulnerability · Published May 1, 2026 · Assigned by Meta
CVE-2026-23863
Medium 6.5
In plain English
A medium-severity security flaw in WhatsApp Desktop for Windows from Facebook. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.5%top 55.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| WhatsApp Desktop for Windows | 2.3000.*.252500 – before 2.3000.1032164386.258709 |
Weakness: CWE-158 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:F/RL:O/RC:C
References
- https://www.facebook.com/security/advisories/cve-2026-23863 x_refsource_CONFIRM
- https://www.whatsapp.com/security/advisories/2026 x_refsource_CONFIRM