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…

Medium · published May 1, 2026

CVSS v3.1
6.5
EPSS
1%
Percentile
43.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
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
CVSS v4.0
Not supplied
EPSS
0.00528 · 43.9th percentile
Published
2026-05-01T16:01Z
EPSS history
Timeline
  • 01 MAY 16:01Z
    An attachment spoofing issue in WhatsApp for Windows prior to v2.3000.1032164386.258709 could have allowed maliciously formatted documents with embedded NUL…
    cvelistv5