CVE-2025-48572: Android Framework -- Privilege Escalation Vulnerability

Background

The Android Framework orchestrates process isolation, permission enforcement, and inter-process communication across the Android operating system. Privilege escalation vulnerabilities in this layer are among the most serious on the platform — they allow an attacker with a foothold in a low-privilege app to gain access to system-level or root-level capabilities, bypassing the Android permission model entirely.

CVE-2025-48572 was added to CISA’s Known Exploited Vulnerabilities catalog on 2025-12-02. Google provided limited technical specifics under coordinated disclosure. The KEV listing indicates this vulnerability is being weaponized in active campaigns, likely combined with other exploits as part of a privilege escalation chain targeting Android devices.

Privilege escalation vulnerabilities in the Android Framework are prized components of Android exploit chains, enabling attackers to move from sandboxed application space to persistent system-level access.

Technical Mechanism

No CWE classification was published with this CVE. Android Framework privilege escalation bugs commonly stem from improper permission checks in Binder service implementations, incorrect handling of UID/GID during cross-process calls, or logic flaws in system service permission validation.

A typical vulnerable pattern in Android system services:

// Vulnerable: permission check uses caller-supplied UID rather than Binder.getCallingUid()
public void elevatedOperation(int callerUid, String action) {
    // Bug: trusts caller-supplied UID instead of enforcing via Binder
    if (callerUid == Process.SYSTEM_UID) {
        performPrivilegedAction(action); // attacker passes SYSTEM_UID
    }
}

An attacker exploiting such a flaw could invoke privileged framework operations without holding the necessary system-level identity, bypassing the Android permission model.

Real-World Exploitation Evidence

CISA’s KEV designation confirms active exploitation. Privilege escalation flaws in the Android Framework are typically chained after initial code execution — for example, via a browser exploit or malicious app — to escape the sandbox and achieve persistent elevated access. Historically, such vulnerabilities have been leveraged by commercial surveillance vendors and nation-state groups to install persistent implants on targeted devices.

Impact Assessment

• Escape from Android application sandbox to system-level privileges
• Ability to install persistent implants or access protected data stores
• Bypass of Android permission model and SELinux policy enforcement
• Access to contacts, messages, location, and cryptographic key material

Affected Versions

Remediation Steps

1. Apply Google’s December 2025 Android Security Bulletin patches immediately.
2. Obtain patches from your device OEM; update timelines vary by manufacturer.
3. Use MDM/EMM solutions to enforce patch compliance across enterprise device fleets.
4. Enable Google Play Protect and restrict installation from unknown sources.
5. Treat unpatched devices as compromised in high-risk environments.

Detection Guidance

Log Sources: Android logcat, MDM audit logs, EDR telemetry.

IOCs: Unexpected UID transitions in process activity; apps accessing system-protected resources without declared permissions.

Sigma-style detection concept:

title: Suspicious Android Framework Privilege Escalation
logsource:
  product: android
  service: framework
detection:
  selection:
    event_type: permission_denial_override
    calling_package|not_startswith: "android"
    target_permission: "android.permission.SYSTEM_*"
  condition: selection

Timeline

References

• NVD — CVE-2025-48572
• CISA KEV — CVE-2025-48572
• MITRE CVE — CVE-2025-48572