CVE-2025-48647 Overview
CVE-2025-48647 is a local privilege escalation vulnerability affecting Google Android. The flaw resides in the cpm_fwtp_msg_handler function within cpm/google/lib/tracepoint/cpm_fwtp_ipc.c. Improper input validation allows a possible memory overwrite, enabling a local attacker with low privileges to escalate to higher privileges on the device. Exploitation requires no user interaction and no additional execution privileges. The vulnerability is tracked under CWE-20: Improper Input Validation and was addressed in the Android Security Bulletin January 2026.
Critical Impact
A local attacker can trigger a memory overwrite through the Compact Power Management (CPM) firmware tracepoint IPC handler, leading to privilege escalation without user interaction.
Affected Products
- Google Android (Pixel devices, per the January 2026 Pixel security bulletin)
- Components under cpm/google/lib/tracepoint/cpm_fwtp_ipc
- Devices without the January 2026 Android security patch level
Discovery Timeline
- 2026-01-16 - CVE-2025-48647 published to the National Vulnerability Database (NVD)
- 2026-01-01 - Fix included in the Android Security Bulletin for Pixel devices
- 2026-06-17 - Last updated in the NVD database
Technical Details for CVE-2025-48647
Vulnerability Analysis
The vulnerability exists in cpm_fwtp_msg_handler, an inter-process communication (IPC) message handler located in Google's Compact Power Management (CPM) firmware tracepoint code path. The handler processes incoming IPC messages but fails to fully validate their contents before writing to memory. This gap allows a locally executing attacker to craft input that triggers an out-of-bounds memory overwrite.
The outcome is local privilege escalation. Because the CPM tracepoint IPC handler runs with elevated privileges, memory corruption in this path can be used to alter execution flow or overwrite adjacent structures. No additional execution privileges are required beyond the ability to reach the IPC endpoint.
Root Cause
The root cause is improper input validation [CWE-20] in cpm_fwtp_msg_handler inside cpm/google/lib/tracepoint/cpm_fwtp_ipc.c. The handler does not adequately verify message size, field length, or type constraints before performing memory operations. As a result, attacker-controlled data can be written outside the intended buffer boundaries.
Attack Vector
The attack vector is local. An attacker requires a foothold on the device, such as a low-privileged application installed on the Android system, to reach the vulnerable IPC handler. Once reached, the attacker sends a crafted IPC message to cpm_fwtp_msg_handler to trigger the memory overwrite. User interaction is not required. Successful exploitation grants the attacker elevated privileges on the device, potentially reaching system-level context.
No public proof-of-concept exploit is currently available, and the vulnerability is not listed on the CISA Known Exploited Vulnerabilities catalog. Technical implementation details are described in the Android Security Bulletin January 2026.
Detection Methods for CVE-2025-48647
Indicators of Compromise
- Unexpected privilege escalation events on Android devices where a process gains system or vendor-level privileges from a low-privileged origin.
- Abnormal termination or restart of processes interacting with the CPM firmware tracepoint IPC channel.
- Presence of unsigned or unknown applications making IPC calls to cpm_fwtp_msg_handler on devices below the January 2026 patch level.
Detection Strategies
- Inventory Android and Pixel devices to identify units running a security patch level earlier than 2026-01-01.
- Monitor mobile device management (MDM) telemetry for applications requesting access to low-level system IPC channels.
- Correlate crash logs and kernel panics that reference CPM tracepoint components to identify potential exploitation attempts.
Monitoring Recommendations
- Enforce MDM policies that report Android security patch level and flag devices missing the January 2026 update.
- Track installation of side-loaded or non-Play Store applications on managed Android fleets, since local access is required for exploitation.
- Ingest mobile endpoint telemetry into a centralized analytics platform to correlate suspicious IPC activity with privilege escalation events.
How to Mitigate CVE-2025-48647
Immediate Actions Required
- Apply the January 2026 Android security patch (2026-01-01 patch level) to all affected Pixel and Android devices.
- Prioritize patching of devices that permit side-loading or that host low-trust applications, since these represent the primary exploitation path.
- Verify current patch level on each device by checking Settings > About Phone > Android Security Update.
Patch Information
Google addressed CVE-2025-48647 in the Android Security Bulletin January 2026. Devices with the 2026-01-01 security patch level or later contain the fix for the improper input validation in cpm_fwtp_msg_handler. Non-Pixel Android vendors incorporate the patch through their own monthly update cycles based on the upstream fix.
Workarounds
- Restrict installation of untrusted applications by disabling side-loading and enforcing installation only from vetted sources.
- Apply MDM policies that block or quarantine devices missing the January 2026 patch level until the update is deployed.
- Reduce the exposed local attack surface by removing unnecessary apps that request low-level system permissions.
# Check Android security patch level via ADB
adb shell getprop ro.build.version.security_patch
# Expected output for patched devices: 2026-01-01 or later
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
