CVE-2019-20783 Auth bypass in n/a

What is CVE-2019-20783?

CVE-2019-20783 is a critical authentication bypass vulnerability in Google Android, published on 17 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered on LG mobile devices with Android OS 7.0, 7.1, 7.2, 8.0, and 8.1 (North America CDMA) software. The LTE protocol implementation allows a bypass of AKA (Authentication and Key Agreement). The LG ID is LVE-SMP-180014 (February 2019).

Which versions are affected by CVE-2019-20783?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2019-20783?

No fix has been published for CVE-2019-20783 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2019-20783 being exploited?

There is no known exploitation of CVE-2019-20783 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-72pf-46cp-4rhv.