CVE-2025-48616: Android Lockdown Bypass via Screen Pinning Logic Error

Technical summary

The vulnerability exists in multiple functions within KeyguardViewMediator.java due to a logic error that fails to properly enforce lockdown mode restrictions when screen pinning is enabled. An attacker with local access and standard user privileges can circumvent lockdown protections to access information that should be restricted. The CVSS 3.1 score of 3.3 reflects the low attack surface (local only), low complexity, requirement for existing user privileges, and impact limited to confidentiality with no integrity or availability compromise.

Business impact

Organizations supporting Android devices should assess whether sensitive user data is exposed if an attacker gains local device access. The impact is primarily confidentiality-focused—an unauthorized local party could view restricted information during lockdown—rather than enabling lateral movement or system compromise. Risk is proportional to how critical the locked-down information is and the likelihood of local device compromise within your environment.

Affected systems

Google Android is affected across multiple versions according to the vendor disclosure. To identify which specific Android versions and devices require patching, refer to the official Google Android security bulletin and vendor advisories, as patch availability and deployment timelines vary by device manufacturer and carrier.

Exploitability

Exploitation requires local access to an unlocked device where the attacker already holds user-level privileges. No additional execution privileges, network access, or user interaction is required once the attacker has local presence. The attack surface is constrained to devices actively using screen pinning in conjunction with lockdown mode—not a system-wide exposure for all Android users.

Remediation

Apply security patches issued by Google and your device manufacturer as they become available. Check the official Android security bulletin for affected versions and recommended update versions. Device manufacturers may release patches at different cadences; contact your device vendor for expected patch timelines if not immediately available through standard update channels.

Patch guidance

Monitor the Google Android security bulletin and your device manufacturer's security advisory channels for patch availability targeting CVE-2025-48616. When patches are released, verify version numbers and compatibility with your device model before deployment. Test patches in a non-critical environment first to ensure compatibility with existing lockdown and screen pinning policies in your organization.

Detection guidance

Detection is challenging at the endpoint level because exploitation leaves minimal forensic traces; the vulnerability allows silent information disclosure. Focus on preventive controls: enforce device encryption, limit local access through strong authentication, conduct regular audits of users with physical device access, and monitor for unexpected access to sensitive information during lockdown periods. Consider device-level logging if your management platform supports KeyguardViewMediator activity auditing.

Why prioritize this

Despite the LOW CVSS score, this vulnerability should not be dismissed in zero-trust or high-sensitivity environments. Prioritize patching for devices handling regulated data (healthcare, financial, legal) or those in shared/high-risk physical locations where unauthorized local access is plausible. For devices in controlled environments with strong physical security, this can be lower priority—but verify your actual device access threat model before deprioritizing.

Risk score, explained

The CVSS 3.1 score of 3.3 reflects: Attack Vector=Local (no remote exploitation), Attack Complexity=Low (straightforward to exploit if local access exists), Privileges Required=Low (standard user sufficient), User Interaction=None (automatic), Scope=Unchanged (no privilege escalation beyond the user context), and Confidentiality Impact=Low (information disclosure only). The score appropriately captures the constrained attack surface but does not account for the sensitivity of information exposed, which you should evaluate in your risk context.

Frequently asked questions