CVE-2026-23863

MEDIUM
MEDIUM Priority: 0.03 BB Relevance: 63/100
Published: 2026-05-01 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Required
S: Unchanged
C: None
I: High
A: None

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
whatsapp whatsapp < 2.3000.1032164386.258709

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

6.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

EPSS — Exploitation Probability

0.53%
Raw Score 0.005280
Percentile 44.6%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00528
2026-10-28
0.00528

Intelligence Sources

nvd ref →