vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2020-1909

CRITICAL
9.8
CVSS Score
Published: November 3, 2020 at 07:15 PM UTC
Updated: June 17, 2026 at 03:02 AM UTC
2 products affected across 1 vendorWhatsAppWhatsapp Business

Using WhatsApp Business for iOS by Facebook?

Get instant alerts when new vulnerabilities affect WhatsApp Business for iOS - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
CRITICAL9.8
Exploit prediction
EPSS 2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

WhatsApp· Whatsapp
95%
v ≥ 2.20.81v < 2.20.1112.20.1112.20.81
Affected range stops below 2.20.111, so it looks safe — our inference, not a vendor statement
Whatsapp Business· Whatsapp
95%
v ≥ 2.20.81v < 2.20.1112.20.1112.20.81
Affected range stops below 2.20.111, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://www.whatsapp.com/security/advisories/2020/

CVSS

9.8CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-416

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card