What’s Vulnerable › Vulnerabilities

CVE-2018-6350

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-06-14 · updated 2026-06-17
• Weakness: CWE-125

Description

An out-of-bounds read was possible in WhatsApp due to incorrect parsing of RTP extension headers. This issue affects WhatsApp for Android prior to 2.18.276, WhatsApp Business for Android prior to 2.18.99, WhatsApp for iOS prior to 2.18.100.6, WhatsApp Business for iOS prior to 2.18.100.2, and WhatsApp for Windows Phone prior to 2.18.224.

Affected products

• Facebook WhatsApp for Android: before 2.18.99; before 2.18.100.6; before 2.18.224 — fixed in 2.18.100.6, 2.18.224, 2.18.99
• Whatsapp Business: before 2.18.100.2; before 2.18.276 — fixed in 2.18.100.2, 2.18.276

How to fix

Upgrade to a fixed version: Facebook WhatsApp for Android 2.18.100.6, 2.18.224, 2.18.99; Whatsapp Business 2.18.100.2, 2.18.276. Check the vendor advisory for mitigations.

References

• http://www.securityfocus.com/bid/108803
• https://www.facebook.com/security/advisories/cve-2018-6350/
• http://www.securityfocus.com/bid/108803
• https://www.facebook.com/security/advisories/cve-2018-6350/

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