CVE-2026-28634 Missing authorization in Android

What is CVE-2026-28634?

CVE-2026-28634 is a high-severity missing authorization vulnerability in Google Android, published on 8 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In handleUssdRequest of PhoneInterfaceManager.java, there is a possible way to send a USSD request without permission due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Weakness: CWE-693

Which versions are affected by CVE-2026-28634?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2026-28634?

Apply the vendor's patch.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-28634 being exploited?

There is no known exploitation of CVE-2026-28634 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 A-471796626, ASB-A-471796626, GHSA-q584-w9q9-2fgr.