ZeroHour

CVE-2026-28612

mass

Local Privilege Escalation via Intent Redirection in Android (ActivityStarter)

CVSS 3.1
7.8 high
EPSS
<1%p2
Published
()
Modified
AI analysis

CVE-2026-28612 is a logic error in the resolveActivity function of ActivityStarter.java in the Android framework that permits Intent Redirection attacks, where a crafted intent is resolved and launched with more privileges than the caller should have. Triggering requires only locally installed code on the device, with no additional execution privileges and no user interaction needed. A successful exploit yields local escalation of privilege, allowing an attacker to run code with elevated system-level permissions on the affected device. All Android devices running unpatched framework builds are potentially affected; the source data does not specify affected or fixed version ranges, so users should consult the Android Security Bulletin for their device. There is no evidence of exploitation so far: the flaw is not in CISA's KEV catalog, no public proof-of-concept is known, and EPSS estimates only a ~0.1% chance of exploitation in the next 30 days.

What to do: Install Android security updates as soon as they are offered via Settings > System > System update, and check with your device manufacturer for the specific security patch level addressing this CVE. Since exploitation requires locally installed code, avoid installing apps from untrusted sources while awaiting the patch. Verify your device's current Android security patch level to confirm it includes the fix.

Affected
Google / Android Android framework (resolveActivity in ActivityStarter.java)
Estimated exposure
massbillions of Android devices (Android's global active installed base; framework flaw likely present on most unpatched builds) — ActivityStarter is a core Android framework component that ships on essentially all Android devices, and Android's active installed base is estimated in the billions, though actual exposure depends on whether each OEM build has been…

Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.

Description

In resolveActivity of ActivityStarter.java, there is a possible way to perform Intent Redirection attacks 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.

Vendors
google
Products
android
Weakness
CWE-693
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

In the news

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