CVE-2018-6350

An out-of-bounds read was possible in WhatsApp due to incorrect parsing of RTP extension headers....

9.8 Critical

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

1.69%Up 1.1 points since Apr 14, 2021

What each source reports

NVD Score used 9.8

Record: CVE-2018-6350
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-125
Updated: 2026-11-02

CVE List No score

Record: CVE-2018-6350
Weakness: CWE-125
Updated: 2026-11-02

EUVDEUVD-2018-18108 No score

Record: EUVD-2018-18108
Updated: 2026-11-03

GitHub AdvisoriesGHSA-57fh-5mmw-ppxc 9.8

An out-of-bounds read was possible in WhatsApp due to incorrect parsing of RTP extension headers....

Record: GHSA-57fh-5mmw-ppxc
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-125
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-6350 is a critical vulnerability (CVSS 9.8) in Facebook Whatsapp Business For Android, published June 14, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.69%, the 77th percentile. No source names a fixed version.