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Critical severity9.8NVD Advisory· Published Jan 4, 2022· Updated Jun 17, 2026

CVE-2021-24042

CVE-2021-24042

Description

The calling logic for WhatsApp for Android prior to v2.21.23, WhatsApp Business for Android prior to v2.21.23, WhatsApp for iOS prior to v2.21.230, WhatsApp Business for iOS prior to v2.21.230, WhatsApp for KaiOS prior to v2.2143, WhatsApp Desktop prior to v2.2146 could have allowed an out-of-bounds write if a user makes a 1:1 call to a malicious actor.

Affected products

14
  • Facebook/WhatsApp for KaiOSv5
    Range: unspecified
  • Whatsapp/Whatsappllm-fuzzy7 versions
    <2.21.23+ 6 more
    • (no CPE)range: <2.21.23
    • cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:android:-:*range: <2.21.23
    • cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:business:android:*:*range: <2.21.23
    • cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:iphone_os:-:*range: <2.21.230
    • cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:business:iphone_os:-:*range: <2.21.230
    • cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:kaios:*:*range: <2.2143
    • cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:desktop:-:*:*range: <2.2146
  • Whatsapp/Whatsapp Businessllm-create
    Range: <2.21.23
  • Facebook/WhatsApp Businesscpe-rescue
    Range: unspecified
  • Facebook/WhatsApp for Androidcpe-rescue2 versions
    unspecified+ 1 more
    • (no CPE)range: unspecified
    • (no CPE)range: unspecified
  • Facebook/WhatsApp Desktopcpe-rescue
    Range: unspecified
  • Facebook/WhatsApp for iPhonecpe-rescue
    Range: unspecified

Patches

Vulnerability mechanics

References

1

News mentions

0

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