CVE-2025-48595: Android Framework Privilege Escalation — Detection and Remediation

Introduction

On Monday, Google released its monthly Android security bulletin for June 2026, patching a total of 124 security vulnerabilities. While the volume is notable, defenders must prioritize one specific high-severity flaw: CVE-2025-48595.

Tracked with a CVSS score of 8.4, this vulnerability resides in the Android Framework component. It is classified as a case of unauthorized privilege escalation that requires no user interaction. Critically, Google has flagged this as an "active security issue," suggesting limited, targeted exploitation may already be occurring in the wild. For organizations managing Android fleets, this is not a routine patch cycle; it is an immediate incident response priority.

Technical Analysis

• CVE Identifier: CVE-2025-48595
• CVSS Score: 8.4 (High)
• Affected Component: Android Framework
• Vulnerability Type: Elevation of Privilege (EoP)
• Exploitation Requirements: None (No user interaction required)

The Risk

The Android Framework serves as the backbone for the operating system, managing application interaction with system resources. A vulnerability here, specifically one allowing privilege escalation without user interaction, is a prime candidate for exploit chains (often called "droppers").

In a typical attack scenario, a threat actor combines a Remote Code Execution (RCE) vulnerability—often in a third-party app or media renderer—with a Framework EoP. While the RCE grants a toehold, the EoP breaks out of the application sandbox (usually confined to SELinux context untrusted_app) and grants the attacker full system privileges (often root or system).

Because CVE-2025-48595 requires no user interaction, it can be exploited silently in the background by a malicious app installed via social engineering or a drive-by download. Successful exploitation compromises the integrity of the entire device, allowing an attacker to disable security controls, install persistent rootkits, or exfiltrate data protected by the Android sandbox.

Detection & Response

Detecting the exploitation of CVE-2025-48595 specifically is challenging without a forensic image, as the attack happens within kernel/memory space. However, reliable detection focuses on the outcome of the exploitation: unauthorized root access and SELinux bypasses.

The following detection rules hunt for the post-exploitation behaviors typically associated with successful Android Framework EoP. These assume you are ingesting mobile logs via Microsoft Defender for Endpoint (MDE) or a similar EDR solution capable of feeding into Sentinel.

SIGMA Rules

The following Sigma rules target suspicious privilege escalation attempts on Android endpoints.

---
title: Potential Android Privilege Escalation via Su Binary Execution
id: 550d9a23-0f72-4e3a-a8c5-cve202548595-01
status: experimental
description: Detects execution of the 'su' binary on Android, indicating a potential privilege escalation attempt or rooted device exploiting CVE-2025-48595.
references:
 - https://source.android.com/security/bulletin/2026-06-01
author: Security Arsenal
date: 2026/06/02
tags:
 - attack.privilege_escalation
 - attack.t1068
logsource:
 product: android
 category: process_creation
detection:
 selection:
   Image|endswith: '/su'
   or
   CommandLine|contains: 'su'
falsepositives:
 - Legitimate administrative usage on rooted corporate devices (rare)
level: high
---
title: Android SELinux Policy Modification Attempt
id: 7a3f1c82-9e4b-4d67-bc12-cve202548595-02
status: experimental
description: Detects attempts to modify SELinux policies or set enforcement modes, often required to maintain persistence after a Framework EoP exploit.
references:
 - https://attack.mitre.org/techniques/T1068/
author: Security Arsenal
date: 2026/06/02
tags:
 - attack.defense_evasion
 - attack.t1562.001
logsource:
 product: android
 category: process_creation
detection:
 selection:
   CommandLine|contains:
     - 'setenforce 0'
     - 'supolicy'
falsepositives:
 - Developer debugging actions on test devices
level: medium

KQL (Microsoft Sentinel / Defender for Endpoint)

This KQL query hunts for devices exhibiting signs of privilege escalation or unexpected shell access that may result from this vulnerability. It targets DeviceProcessEvents which captures process execution on enrolled MDE Android devices.

// Hunt for signs of Android Framework Privilege Escalation (CVE-2025-48595)
DeviceProcessEvents
| where Timestamp > ago(7d)
| where ActionType in ("ProcessCreated", "ProcessStart")
| where
  // Check for common root/su binaries execution
  FileName has "su" or 
  ProcessCommandLine has_any ("su -c", "supolicy", "setenforce") or
  // Check for shell access spawned by unusual apps (potential exploitation chain)
  (FileName in~ ("sh", "dash") and InitiatingProcessFileName !in~ ("adbd", "com.android.shell"))
| extend DeviceName = DeviceName, AccountName = AccountName, FilePath = FolderPath
| project Timestamp, DeviceName, InitiatingProcessFileName, FileName, ProcessCommandLine, ActionType
| order by Timestamp desc

Velociraptor VQL

Velociraptor is highly effective for triaging Android devices. This VQL artifact hunts for devices that are not patched against the June 2026 threats by checking the security patch level property, and identifies potential su binaries.

-- Hunt for unpatched Android devices and root indicators
SELECT 
  OSBuild.os_version AS OSVersion,
  getprops('ro.build.version.security_patch') AS SecurityPatchLevel,
  getprops('ro.product.model') AS DeviceModel,
  getprops('ro.build.id') AS BuildID
FROM info()
-- Filter for devices with security patch prior to June 2026
WHERE SecurityPatchLevel < '2026-06'
-- Alternatively, hunt for su binaries on the filesystem
-- SELECT FullPath, Size, Mtime
-- FROM glob(globs='/system/bin/su', '/system/xbin/su', '/system/app/Superuser.apk')

Remediation Script (Bash/ADB)

This script is intended for security administrators using ADB or an MDM shell to verify the patch status of connected devices. It checks the security patch level against the required 2026-06-01 date.

#!/bin/bash
# Verify Android Security Patch Level for CVE-2025-48595

echo "Checking Security Patch Level..."
PATCH_LEVEL=$(getprop ro.build.version.security_patch)
REQUIRED_DATE="2026-06-01"

echo "Current Patch Level: $PATCH_LEVEL"

# Simple string comparison works for YYYY-MM-DD format
if [[ "$PATCH_LEVEL" < "$REQUIRED_DATE" ]]; then
  echo "[VULNERABLE] Device is vulnerable to CVE-2025-48595 and other June 2026 flaws."
  echo "Action Required: Update Android OS immediately."
  exit 1
else
  echo "[PATCHED] Device is protected against June 2026 vulnerabilities."
  exit 0
fi

Remediation

1. Apply the June 2026 Update: Organizations must ensure all Android devices are updated to the 2026-06-01 security patch level or later. This update contains the fix for CVE-2025-48595.
2. Prioritize Framework Flaws: In your vulnerability management queue, flag CVE-2025-48595 as "High Priority" due to its active exploitation status and high CVSS score (8.4).
3. Verify via MDM: Push a compliance policy via your Mobile Device Management (MDM) solution (e.g., Intune, VMware Workspace ONE) that sets the minimum required Android patch level to 2026-06-01. Non-compliant devices should be blocked from accessing corporate data.
4. Review App Permissions: Since this is a Framework flaw, any app could potentially leverage it if combined with another flaw. Audit the permission model of apps installed on enterprise devices, specifically looking for apps with unnecessary accessibility services.
5. Official Advisory: Refer to the Android Security Bulletin—June 2026 for specific firmware version numbers for your device OEMs (Pixel, Samsung, Xiaomi, etc.).

Related Resources

Security Arsenal Penetration Testing Services AlertMonitor Platform Book a SOC Assessment vulnerability-management Intel Hub