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 t…

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. May 1, 2026 · NIST NVD

   Detected

   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.

2. Jun 17, 2026 · NIST NVD

   Updated

   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

• cpe whatsapp/whatsappversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-23863

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-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 application as one type of file but run as an executable when opened. We have not

  nvd.nist.gov

References

• Third Party Advisory · facebook.com
• Vendor Advisory · whatsapp.com