Description
In onNullBinding of HostEmulationManager.java, there is a possible way to launch an activity from the background 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 needed for exploitation.
Published: 2026-06-01
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

A logic error in onNullBinding of HostEmulationManager.java allows an app to launch an activity from the background. This behavior can lead to a local privilege escalation attack with no need for additional execution privileges. The exploitation requires user interaction, meaning a user must be prompted or interact with the device for the attack to succeed.

Affected Systems

The vulnerability affects Google Android devices running version 14.0, 15.0, 16.0, or the 16.0 qpr2 branch, targeting the HostEmulationManager component of the Android OS. All devices on those releases are potentially vulnerable unless the corresponding patch is applied.

Risk and Exploitability

The CVE is not listed in the CISA KEV catalog and an EPSS score of < 1% indicates a very low but non‑zero probability of exploitation. The CVSS score of 7.8 indicates a medium‑high severity local privilege escalation potential. Because the attack requires user interaction, the risk depends heavily on user behavior, but once triggered it could elevate attacker privileges on the device.

Generated by OpenCVE AI on June 3, 2026 at 04:33 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Update your Android device to the latest version that contains the HostEmulationManager patch.
  • Limit background app activity launch by disabling or restricting background activity permissions in the app manifest or using device policy controls.
  • Verify that no untrusted third‑party apps can invoke the HostEmulationManager component and remove or update any such apps.

Generated by OpenCVE AI on June 3, 2026 at 04:33 UTC.

Tracking

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Advisories

No advisories yet.

History

Wed, 03 Jun 2026 02:30:00 +0000

Type Values Removed Values Added
Title Local Privilege Escalation via Background Activity Launch in Android
Weaknesses CWE-284

Tue, 02 Jun 2026 18:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-273
CPEs cpe:2.3:o:google:android:14.0:*:*:*:*:*:*:*
cpe:2.3:o:google:android:15.0:*:*:*:*:*:*:*
cpe:2.3:o:google:android:16.0:-:*:*:*:*:*:*
cpe:2.3:o:google:android:16.0:qpr2:*:*:*:*:*:*

Tue, 02 Jun 2026 01:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284

Tue, 02 Jun 2026 00:45:00 +0000

Type Values Removed Values Added
Title Background Activity Launch Enabling Local Privilege Escalation in Android HostEmulationManager
Weaknesses CWE-20
CWE-640

Mon, 01 Jun 2026 23:30:00 +0000

Type Values Removed Values Added
Title Background Activity Launch Enabling Local Privilege Escalation in Android HostEmulationManager
Weaknesses CWE-20
CWE-640
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 01 Jun 2026 23:00:00 +0000

Type Values Removed Values Added
First Time appeared Google
Google android
Vendors & Products Google
Google android

Mon, 01 Jun 2026 21:45:00 +0000

Type Values Removed Values Added
Description In onNullBinding of HostEmulationManager.java, there is a possible way to launch an activity from the background 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 needed for exploitation.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: google_android

Published:

Updated: 2026-06-02T03:56:14.051Z

Reserved: 2025-10-15T15:43:02.326Z

Link: CVE-2026-0099

cve-icon Vulnrichment

Updated: 2026-06-01T22:43:49.668Z

cve-icon NVD

Status : Analyzed

Published: 2026-06-01T22:16:23.630

Modified: 2026-06-02T18:04:41.377

Link: CVE-2026-0099

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-02T20:00:13Z

Weaknesses