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TI-2020-01836 Aliases CVE-2020-1909GHSA-553h-pw8j-m6f2

Use after free in Meta WhatsApp Business for iOS

Priority MEDIUM 46CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.

Summary

A use-after-free in a logging library in WhatsApp for iOS prior to v2.20.111 and WhatsApp Business for iOS prior to v2.20.111 could have resulted in memory corruption, crashes and potentially code execution. This could have happened only if several events occurred together in sequence, including receiving an animated sticker while placing a WhatsApp video call on hold.

Why it matters now

EPSS 0.02283 83rd percentileScored 2026-11-07
Fix Fixed WhatsApp Business for iOS (Facebook): 2.20.111WhatsApp for iOS (Facebook): 2.20.111

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MetaWhatsApp Business for iOS2.20.111; before 2.20.111; 2.20.81 and later2.20.111Patch availableCNA
MetaWhatsApp for iOS2.20.111; before 2.20.111; 2.20.81 and later2.20.111Patch availableCNA
  • WhatsApp Business for iOS VendorMeta Affected 2.20.111; before 2.20.111; 2.20.81 and later Fixed in 2.20.111 Patch available CNA
  • WhatsApp for iOS VendorMeta Affected 2.20.111; before 2.20.111; 2.20.81 and later Fixed in 2.20.111 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:iphone_os:*:*before 2.20.111VulnerableWhatsApp
cpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:iphone_os:*:*before 2.20.111VulnerableWhatsApp
  • cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:iphone_os:*:* Versions before 2.20.111 Vulnerable ·WhatsApp
  • cpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:iphone_os:*:* Versions before 2.20.111 Vulnerable ·WhatsApp

Remediation

  • Fix · CNA WhatsApp Business for iOS (Facebook) Fixed in 2.20.111
  • Fix · CNA WhatsApp for iOS (Facebook) Fixed in 2.20.111

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-1909
  2. 2026-10-03 Alias added: GHSA-553h-pw8j-m6f2

References

Advisory 1

  • TI-2025-34861 Deserialization of untrusted data in Meta react-server-dom-webpack KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-02633 Heap-based buffer overflow in Meta WhatsApp for Android KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-13416 Cross-site scripting in Meta WhatsApp Desktop KEVCVSS 3.1HIGH 8.2
  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2025-34857 Incorrect authorization in Meta WhatsApp Desktop for Mac KEVCVSS 3.1MEDIUM 5.4
  • TI-2025-34863 Deserialization of untrusted data in Meta react-server-dom-webpack CVSS 3.1HIGH 7.5
See all 191 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences