Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessInstall malicious app on target Android device
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DeliveryInvoke Activity Manager with crafted process context
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ExploitTrigger logic error in areBackgroundActivityStartsAllowed
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ExecutionGate returns true for disallowed caller
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PersistLaunch privileged background activity
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ImpactAccess protected data or system-level components
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V15 - Secure Coding and Architecture Protection mechanism completeness
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| Exploitation Conditions | The attacker must have code executing on the target Android device with at minimum user-level (PR:L) app execution privileges - in practice this means a malicious or compromised app must already be installed and running. The attack vector is entirely local (AV:L); there is no remote or network-based exploitation path. The vulnerability does not require any user interaction after installation (UI:N), and complexity is low (AC:L), meaning no special race condition or precise timing is needed. Exploitation is limited by: (1) the requirement to have an app installed on the target device, (2) SSVC Automatable:no indicating it cannot be trivially mass-exploited at scale, and (3) no public exploit or POC code at time of analysis. Default Android security features such as Play Protect and app installation restrictions raise the practical bar for initial code execution. |
| Impact | The CVSS 3.1 score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately reflects a local, low-complexity privilege escalation with total impact across confidentiality, integrity, and availability - consistent with SSVC Technical Impact: total. The local attack vector (AV:L) significantly limits the threat model: an attacker must already have code executing on the target device, typically as an installed (possibly malicious) app. SSVC rates Exploitation: none and Automatable: no, and EPSS at 0.12% (2nd percentile) confirms extremely low observed exploitation probability. Despite the full-impact CVSS triad, this is a classic 'high CVSS, lower real-world urgency' scenario for most defenders: exploitation requires a malicious app to be installed and active on the victim device, which itself is a non-trivial prerequisite. That said, for organizations managing Android fleets, this remains a meaningful escalation risk since a compromised or sideloaded app could use this to silently assume a higher trust posture without any user prompt. The September 2026 Android Security Bulletin provides the authoritative fix. |
| Exploit ScenarioDerived | A malicious Android application installed on a victim device - for example, via social engineering or a compromised third-party app store - invokes internal Android APIs or crafted Intent sequences that trigger areBackgroundActivityStartsAllowed with manipulated process state, causing the logic gate to incorrectly return true. The app then launches a privileged background activity (e.g., a system-trusted UI or a sensitive component it should not be allowed to start), achieving privilege escalation to gain access to protected data or system functions. No user interaction is required after app installation, making this silently exploitable once the malicious app is on-device. |
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Alert meAnalysisAIv1 – Sep 10, 2026
Local privilege escalation in Android's BackgroundLaunchProcessController allows a low-privileged app or user process to launch background activities beyond its permitted scope due to a logic error in the areBackgroundActivityStartsAllowed gating function. Affected versions span Android 14 through Android 16-QPR2, covering the vast majority of modern Android devices in active use. With PR:L and UI:N, exploitation requires only a foothold as a regular user-space app - no user interaction or elevated permissions - making it a reliable post-installation escalation primitive. No public exploit exists and CISA SSVC rates exploitation as none at time of analysis.
RemediationAI
Apply the Android September 2026 Security Bulletin patch (2026-09-01 patch level), available via the Android Security Bulletin at https://source.android.com/docs/security/bulletin/2026/2026-09-01. OEM device manufacturers (Samsung, OnePlus, Xiaomi, etc.) will need to incorporate this bulletin into their own monthly security updates; actual patch availability on non-Pixel devices depends on the OEM's update cadence. For enterprise Android deployments managed via EMM/MDM solutions, enforce a minimum patch-level policy of 2026-09-01 using Android Enterprise device compliance policies. As a compensating control prior to patching, restrict sideloading and enforce app installation exclusively from trusted sources (Google Play or managed enterprise app stores) to reduce the probability of a malicious app reaching the device in the first place - this does not eliminate the vulnerability but significantly raises the bar for exploitation.
Affected VersionsENISA
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Technical ContextAI · show details
The flaw resides in BackgroundLaunchProcessController.java within the Android Activity Manager framework, specifically in the areBackgroundActivityStartsAllowed() method (CWE-693: Protection Mechanism Failure). Background Activity Start (BAS) restrictions, introduced progressively from Android 10 onward, are a core Android security boundary designed to prevent arbitrary or invisible app launches that could hijack the foreground or abuse system-level transitions. A logic error - likely an incorrect boolean short-circuit, inverted condition, or missing check on a calling process's state - allows an app with only standard user execution privileges to satisfy or bypass this gate and launch activities it should not be permitted to initiate. The affected CPE spans Android 14, 15, 16, and 16-QPR2, meaning the flaw crosses multiple major release trains and is present in currently-shipped, fully-patched devices prior to the September 2026 bulletin.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local access with user-level app privileges required; no interaction needed; full CIA impact from unintended activity launch enabling privilege escalation.
Primary rating from Vendor (android).
CVSS VectorVendor: android
Lifecycle Timeline
3DescriptionCVE.org
In areBackgroundActivityStartsAllowed of BackgroundLaunchProcessController.java, there is a possible unintended way to launch activities in the background due to a logic error in the code. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation.
Executive ViewAI
Android devices running versions 14 through 16-QPR2 (representing the majority of active Android installations globally) contain a local privilege escalation flaw that allows low-privilege installed apps to bypass activity launch restrictions without user interaction. With no public exploit identified at time of analysis and no vendor-released patch identified at time of analysis, organizations managing Android device fleets-including BYOD, corporate, and educational deployments-face an unpatched vulnerability affecting hundreds of millions of devices until Google releases remediation.
Without vendor patch availability, implement mobile device management (MDM) controls to restrict app installation to pre-approved/vetted applications only; enforce permission-based restrictions on background activity launch; maintain updated SELinux policies to prevent unauthorized privilege escalation; monitor device logs and system audit trails for suspicious background process launches; consider disabling non-critical background activities in app configurations where operationally feasible; prioritize and expedite OS upgrades to post-16 Android versions when available from manufacturers.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.
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EUVD-2026-74047
GHSA-j4jf-x32c-7fmh
NVD
CVE.org
EPSS
Vulnrichment
VulDB
Exploit-DB