CVE-2016-3821 Null dereference in n/a

What is CVE-2016-3821?

CVE-2016-3821 is a critical vulnerability in Google Android, published on 5 Aug 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

libmedia in mediaserver in Android 4.x before 4.4.4, 5.0.x before 5.0.2, 5.1.x before 5.1.1, and 6.x before 2016-08-01 has certain incorrect declarations, which allows remote attackers to execute arbitrary code or cause a denial of service (NULL pointer dereference or memory corruption) via a crafted media file, aka internal bug 28166152.

Weakness: CWE-476

Which versions are affected by CVE-2016-3821?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2016-3821?

No fix has been published for CVE-2016-3821 yet. Limit exposure of the affected software until one is available.

Is CVE-2016-3821 being exploited?

There is no known exploitation of CVE-2016-3821 in the wild and no public exploit code.

Other vulnerabilities in Google Android

• CVE-2026-58704 Google Pixel Improper Authorization Exploited High 8.8
• CVE-2025-48543 Android Runtime Use-After-Free Exploited High 8.8
• CVE-2023-35674 Android Framework Privilege Escalation Exploited High 8.8
• CVE-2025-48595 Android Framework Integer Overflow Exploited High 8.4
• CVE-2024-32896 Android Pixel Privilege Escalation Exploited High 8.1

All Google Android vulnerabilities

Sources

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

Also known as GHSA-7vmr-3f3w-fc3w, UBUNTU-CVE-2016-3821.