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Intro – How CVE-2025-48595 Works
CVE-2025-48595 is an actively exploited integer overflow vulnerability in the Android Framework, the core set of APIs and system services that apps interact with directly. The flaw is present in multiple locations across the Android 14, 15, 16, and 16 QPR2 codebases. In these affected locations, the software performs arithmetic operations using integer values without proper bounds checking. When a local attacker supplies a specifically crafted input, the integer can be made to overflow—its calculated value exceeding the maximum representable size of its allocated data type. This overflow is a classic CWE-190 vulnerability. Instead of erroring or saturating, the value wraps around to a very small number. This small, incorrect value is then subsequently used by the Framework as a critical control, such as a buffer size for a memory allocation, an index for an array, or a loop counter.
Consequently, the vulnerability enables a controlled out-of-bounds write. The small overflowed value leads to the allocation of a memory buffer that is too small for the data intended to be copied into it. When the Framework writes the expected amount of data into this insufficiently sized buffer, a heap-based overflow occurs, corrupting adjacent memory structures. An attacker, through a malicious application or script running on the device, can use this memory corruption to hijack the execution flow of the Framework process. By embedding a specific payload, they can achieve arbitrary code execution within the context of the Framework, which operates at a very high permission level. Because the attack surface is within standard Framework components and requires no user interaction or special privileges beyond running an app, it effectively allows a complete and silent local privilege escalation to gain full control of the target device.
DailyCVE Form:
Platform: Google Android
Version: 14,15,16
Vulnerability : Integer overflow
Severity: High (8.4)
date: 2026-06-01
Prediction: 2026-06-15
What Undercode Say:
Check Android security patch level adb shell getprop ro.build.version.security_patch List installed packages to target adb shell pm list packages Monitor logcat for memory corruption attempts adb logcat | grep -E "libc|DEBUG|Fatal signal"
Exploit:
A basic exploit requires a locally installed application with no special privileges. The app would send a malicious intent containing a huge, specific integer value to a vulnerable Framework service. This value, when parsed by the Framework, overflows the associated integer counter, causing the service to allocate a buffer of size `0` and then copy a large payload into it, overflowing the heap. The payload’s return address is crafted to point to a ROP chain that disables SELinux or spawns a root shell. No user interaction is needed. Google confirmed limited, targeted exploitation in the wild prior to patching.
Protection:
The primary protection is to install Google’s Android Security Bulletin for June 2026, which fully resolves CVE-2025-48595 in the 2026-06-05 patch level. As a temporary measure, users should avoid installing untrusted applications from unknown sources. Enterprise administrators can use mobile device management (MDM) policies to whitelist only essential, trusted apps until all devices are updated.
Impact:
Successful exploitation grants the attacker full system-level privileges on the device, matching the permissions of the Android Framework itself. This allows them to completely bypass Android’s permission model, accessing all user data (emails, messages, photos), installing persistent spyware, monitoring keystrokes, and taking full remote control of the device without the user’s knowledge.
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Sources:
Reported By: www.cve.org
Extra Source Hub:
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