Google has confirmed active exploitation of a critical zero-day vulnerability in the Android Framework, tracked as CVE-2025-48595, patched as part of the June 2026 Android Security Bulletin.
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added the flaw to its Known Exploited Vulnerabilities (KEV) catalog with a federal remediation deadline of June 5, 2026, making this one of the most time-sensitive Android security events of the year.
CVE-2025-48595 is a high-severity integer overflow vulnerability (CWE-190) residing in the Android Framework, the foundational layer of APIs and system services that every Android application interacts with directly.
An integer overflow occurs when an arithmetic calculation produces a result that exceeds the maximum value a data type can hold, causing the value to wrap around unpredictably. Attackers can weaponize this behavior to corrupt memory and redirect execution flow to malicious code.
According to Google’s June 2026 Android Security Bulletin, the vulnerability exists across multiple locations within the Framework component.
Successful exploitation allows a local attacker to escalate privileges and execute arbitrary code at a higher permission level, effectively seizing system-level control over the targeted device, without requiring any additional execution privileges or user interaction.
The flaw carries a CVSS score of 8.4, placing it firmly in the high-severity tier, and affects devices running Android 14, 15, 16, and 16-QPR2 (Quarterly Platform Release 2).
Three characteristics make CVE-2025-48595 stand out among the 124 vulnerabilities patched in Google’s June 2026 bulletin:
1. No User Interaction Required Most social-engineering attacks require a victim to click a link, open a file, or grant a permission. This flaw demands none of that. Once an attacker achieves an initial foothold, most likely through a malicious or trojanized application that a targeted user was tricked into sideloading, the privilege escalation happens silently, with zero prompts or approvals needed.
2. Framework-Level Scope Because this is a Framework vulnerability rather than an application-layer flaw, it affects every Android device running the vulnerable OS versions regardless of manufacturer. Google Pixel, Samsung Galaxy, OnePlus, Motorola, Xiaomi, and every other Android OEM are equally exposed. Enterprise environments managed through Android Enterprise, Samsung Knox, or any EMM/MDM platform are not shielded either.
3. Confirmed In-the-Wild Exploitation Google acknowledged that CVE-2025-48595 “may be under limited, targeted exploitation” language the company reserves for confirmed real-world attacks that have not yet reached mass scale. This pattern is historically associated with commercial spyware vendors and nation-state threat actors pursuing high-value targets such as journalists, activists, dissidents, and government officials. This marks the fourth Android zero-day patched since December 2025, signaling a trend of sustained, sophisticated interest in Android Framework attack surfaces.
While Google and CISA have withheld full technical details to limit copycat exploitation, the confirmed attack chain follows a well-understood pattern for local privilege escalation vulnerabilities:
Stage 1 – Initial Access: A target is deceived into installing a malicious application, typically distributed outside the Google Play Store via phishing links, third-party app stores, or direct APK delivery. Alternatively, the vulnerability may be chained with a separate remote code execution flaw as part of a multi-stage attack.
Stage 2 – Integer Overflow Trigger: The malicious app invokes Framework APIs in a way that triggers the integer overflow at one of the affected code locations, corrupting memory in a controlled manner.
Stage 3 – Privilege Escalation: The memory corruption is leveraged to redirect execution to attacker-controlled code running at a higher privilege level, granting system-level access without the user’s knowledge.
Stage 4 – Full Device Control: With elevated permissions, the attacker can access sensitive data, install persistent backdoors, enable microphone and camera access, intercept communications, or act as a pivot point into enterprise networks.
The vulnerability impacts all devices running the following Android versions that have not yet received the June 2026 patch:
| Android Version | Affected |
|---|---|
| Android 14 | Yes |
| Android 15 | Yes |
| Android 16 | Yes |
| Android 16-QPR2 | Yes |
| Android 13 and earlier | Not confirmed |
Because OEMs and carriers control patch distribution timelines, two devices running identical Android versions may sit at different risk levels depending on whether their manufacturer has shipped the June 2026 security update. Pixel devices typically receive patches first; other OEMs may lag by weeks to months.
CISA added CVE-2025-48595 to its KEV catalog on June 2, 2026, triggering Binding Operational Directive (BOD) 22-01 obligations for all U.S. federal civilian agencies. The remediation deadline is June 5, 2026 an extraordinarily tight three-day window that underscores the agency’s assessment of exploitation urgency.
Under BOD 22-01, federal agencies must either apply the vendor-issued patch or implement approved mitigations by the deadline. If neither is possible, agencies must discontinue use of the affected systems.
While BOD 22-01 technically applies only to federal civilian agencies, CISA strongly urges all private-sector organizations and individual users to treat this deadline with the same seriousness.
Mitigation
For Individual Users: Navigate to Settings → Security & Privacy → Security Update and install the June 2026 Android security patch immediately. Avoid installing applications from outside the Google Play Store. Review installed applications and remove any with unknown or suspicious origins.
For Enterprise Security Teams: Audit managed device compliance via your EMM/MDM console and prioritize patch enforcement for devices running Android 14 through 16. Implement or verify mobile threat defense (MTD) solutions across the device fleet. Enhance monitoring for anomalous privilege escalation behavior and lateral movement from mobile endpoints. Review Android Enterprise security policies and restrict sideloading where possible.
For Cloud Service Operators: Follow applicable BOD 22-01 guidance for cloud services hosting Android-based workloads or managing Android endpoints at scale.
CVE-2025-48595 is the fourth Android zero-day addressed since December 2025, reflecting a pronounced escalation in the targeting of Android’s core system layers.
The Android Framework’s privileged position sitting between applications and the underlying Linux kernel makes it an attractive target for threat actors seeking persistent, high-privilege access while avoiding more heavily monitored kernel-level exploits.
Security researchers and government agencies have noted growing commercial interest in Android exploitation capabilities, with multiple spyware vendors known to maintain active zero-day portfolios targeting the platform.
Frequently Asked Questions
Q1: Does CVE-2025-48595 affect my phone if I only use apps from the Google Play Store? Play Store apps reduce sideloading risk, but the vulnerability can also be chained with other flaws for remote exploitation, so patching is essential regardless of your app source habits.
Q2: How do I check if my Android device has the June 2026 security patch applied? Go to Settings → About Phone → Android Security Patch Level and verify the date reads June 1, 2026 or later.
Q3: Is CVE-2025-48595 related to ransomware campaigns? CISA currently classifies ransomware involvement as unknown, though the KEV listing means active exploitation is confirmed; organizations should patch immediately without waiting for ransomware attribution.
Q4: What should enterprises do if they cannot patch all Android devices before the June 5 deadline? Isolate non-compliant devices from sensitive network segments, enforce stricter MDM policies restricting app installation, and deploy mobile threat defense solutions while expediting OEM patch rollout.
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