HOMEVULNERABILITIESCVE-2026-23863
MEDIUM

CVE-2026-23863

CWE-158Published: May 1, 2026· Updated: May 4, 2026

6.5
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:1.0th

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.

NVD Source

Technical Analysis

CVE-2026-23863 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 6.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

All References (2)

→
https://www.facebook.com/security/advisories/cve-2026-23863
→
https://www.whatsapp.com/security/advisories/2026

Quick Facts

CVE IDCVE-2026-23863
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-158
CISA KEVNo
EPSS (30d)0.01%
PublishedMay 1, 2026

Related CVEs (CWE-158)

CVE-2026-33191
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CVE-2026-41256
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CVE-2026-43861
3.7
CVE-2026-43859
3.7
CVE-2026-28540
3.3
CVE-2026-4359
2.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-23863 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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CVE-2026-23863 — CVSS 6.5 MEDIUM | CTIWATCH.COM