Vulnerability Details 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 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 1.7%
CVSS Severity
CVSS v3 Score 6.5
References
Products affected by CVE-2026-23863
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cpe:2.3:a:whatsapp:whatsapp:-
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cpe:2.3:a:whatsapp:whatsapp:0.2.1061
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cpe:2.3:a:whatsapp:whatsapp:0.2.2243
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cpe:2.3:a:whatsapp:whatsapp:0.2.2478
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cpe:2.3:a:whatsapp:whatsapp:0.2.2731
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cpe:2.3:a:whatsapp:whatsapp:0.2.3120
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cpe:2.3:a:whatsapp:whatsapp:0.2.3572
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cpe:2.3:a:whatsapp:whatsapp:0.2.3698
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cpe:2.3:a:whatsapp:whatsapp:0.2.4240
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cpe:2.3:a:whatsapp:whatsapp:0.2.5371
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cpe:2.3:a:whatsapp:whatsapp:0.2.684
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cpe:2.3:a:whatsapp:whatsapp:0.2.777
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cpe:2.3:a:whatsapp:whatsapp:0.2.8505
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cpe:2.3:a:whatsapp:whatsapp:0.2.9008
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cpe:2.3:a:whatsapp:whatsapp:0.2.9229
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cpe:2.3:a:whatsapp:whatsapp:0.2.9737
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cpe:2.3:a:whatsapp:whatsapp:0.3.1071.0
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cpe:2.3:a:whatsapp:whatsapp:0.3.1847
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cpe:2.3:a:whatsapp:whatsapp:0.3.3793
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cpe:2.3:a:whatsapp:whatsapp:0.3.9309
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cpe:2.3:a:whatsapp:whatsapp:2.18.224
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cpe:2.3:a:whatsapp:whatsapp:2.18.368
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cpe:2.3:a:whatsapp:whatsapp:2.2320.2
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cpe:2.3:a:whatsapp:whatsapp:2.2450.6