PatchTheCVECVE-2026-23863: An attachment spoofing issue in WhatsApp for Windows prior to v2.3000.1032164386.258709 could have allowed mal
CVE-2026-23863 is a medium-severity flaw (CVSS 6.5) affecting whatsapp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.5 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.5% (top 56%) |
| CISA exploited list | No |
| Weakness | CWE-158 |
| Published | 2026-05-01 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-23863?
whatsapp: upgrade to 2.3000.1032164386.258709. Exact commands for each OS are on this page.
Is CVE-2026-23863 being exploited?
CVE-2026-23863 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-23863 affect?
CVE-2026-23863 affects whatsapp. Severity is medium (CVSS 6.5). 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
How urgent is CVE-2026-23863?
Priority 34/100. No elevated risk signals yet.
Software pages
Windows vulnerabilities · WhatsApp vulnerabilities
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