CVE-2018-6344 Memory corruption in WhatsApp for Android

What is CVE-2018-6344?

CVE-2018-6344 is a high-severity memory corruption vulnerability in Facebook WhatsApp for Android, published on 31 Dec 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A heap corruption in WhatsApp can be caused by a malformed RTP packet being sent after a call is established. The vulnerability can be used to cause denial of service. It affects WhatsApp for Android prior to v2.18.293, WhatsApp for iOS prior to v2.18.93, and WhatsApp for Windows Phone prior to v2.18.172.

Weakness: CWE-787, CWE-122

Which versions are affected by CVE-2018-6344?

It affects 1 product.

Products include Whatsapp Whatsapp.

How do I fix CVE-2018-6344?

No fix has been published for CVE-2018-6344 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2018-6344 being exploited?

There is no known exploitation of CVE-2018-6344 in the wild and no public exploit code.

Other vulnerabilities in Facebook WhatsApp for Android

• CVE-2019-3568 WhatsApp VOIP Stack Buffer Overflow Exploited Critical 9.8
• CVE-2019-18426 WhatsApp Cross-Site Scripting Exploited High 8.2
• CVE-2025-55177 Meta Platforms WhatsApp Incorrect Authorization Exploited Medium 5.4
• CVE-2022-36934 Integer overflow in WhatsApp Business for Android Critical 9.8
• CVE-2021-24042 Memory corruption in WhatsApp Business for Android Critical 9.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-vhw2-763j-8c4r.