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CVE-2025-48595 – High‑Severity Android Framework Integer Overflow

Key Takeaways

  • Severity: High (CVSS 8.4)
  • Impact: Local code execution → full device takeover (privilege escalation)
  • Affected: Android 14, 15, 16 (including QPR2 updates)
  • Status: Actively exploited in the wild; fixed in June 2026 security update
  • Action: Deploy the June 2026 Android patch immediately; monitor for indicators of compromise

Overview

Google released the June 2026 Android security bulletin, addressing 124 vulnerabilities. Among them, CVE-2025-48595 is a high‑severity integer overflow in the Android framework that enables local privilege escalation without user interaction. The vulnerability has been added to the CISA KEV catalog, indicating confirmed exploitation in targeted attacks.

Technical Details

  • Vulnerability type: CWE‑190 integer overflow in the Android framework code path.
  • Root cause: Improper bounds checking on a size field leads to an overflow, allowing crafted input to corrupt memory and execute arbitrary code with kernel‑level privileges.
  • Attack vector: Local (AV:L); no network access or user interaction required.
  • Privileges required: None (PR:N); attacker can start from an unprivileged app or malicious code on the device.
  • Impact metrics (CVSS 3.1): CVSS 8.4 – AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
  • Exploitation: Confirmed active exploitation in the wild, observed in limited targeted campaigns beginning early June 2026.

Severity & Impact

MetricValue
CVSS Base Score8.4
SeverityHigh
VectorAV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
ImpactComplete confidentiality, integrity, and availability compromise on the affected device (full takeover).

The local nature of the flaw means any malicious app or code placed on the device can gain system‑level control, bypassing Android’s sandbox and SELinux policies.

Affected Products

The vulnerability affects:

  • Google Android 14.0
  • Google Android 15.0
  • Google Android 16.0 (including QPR2 beta updates)

For the exhaustive list of CPE entries and version details, see the live CVE page: https://vulnsocial.com/cve/CVE-2025-48595.

Actionable Insights – What Security Teams Should Do

  1. Patch the June 2026 Android update across all managed devices. Verify that the update includes the fix for CVE-2025-48595.
  2. Validate patch deployment using MDM/EMM solutions. Check the security patch level (Settings → About phone → Android security patch level) to confirm the version is ≥ 2026‑06‑01.
  3. Inventory devices still on pre‑June 2026 releases and prioritize them for manual update or mitigation.
  4. Monitor for Indicators of Compromise (IoCs): unusual processes with UID 0, unexpected SELinux denials, or logs indicating memory corruption in system_server.
  5. Leverage threat‑intel feeds (e.g., https://vulnsocial.com) to track real‑time activity around CVE-2025-48595.
  6. Consider hardened Android variants (e.g., GrapheneOS) for high‑value or sensitive devices, as they often ship patches earlier than OEMs.
  7. Restrict installation of apps from unknown sources; enforce Play Protect or equivalent.

Remediation & Mitigation

  1. Patch the device with the June 2026 Android security update (or later) that contains the fix for CVE-2025-48595.
  2. Verify the patch level on each device; confirm the presence of the fix via the security bulletin.
  3. Restrict installation of apps from untrusted sources; enable Play Protect.
  4. Enable SELinux enforcing mode and verify that no policy violations are logged.
  5. Monitor system logs and telemetry for signs of privilege‑escalation attempts; integrate alerts into SIEM.
  6. Isolate any device that cannot be patched (e.g., legacy hardware) from sensitive networks until a mitigation is applied.

Bottom Line

CVE-2025-48595 is a high‑severity integer overflow in the Android framework that enables full device takeover without user interaction. It is actively exploited and listed in the CISA KEV program. Immediate deployment of the June 2026 Android security patch is the critical mitigation step. Ongoing monitoring and strict app controls are essential to defend against residual risk.

References

  • Google Android Security Bulletin – June 2026: https://source.android.com/docs/security/bulletin/2026/2026-06-01
  • CISA Known Exploited Vulnerabilities Catalog – CVE‑2025‑48595: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-48595
  • Real‑time vulnerability intelligence: https://vulnsocial.com/cve/CVE-2025-48595

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