---
title: "CVE-2025-48543: Android Runtime Use-After-Free Vulnerability"
url: https://erroneo.us/security/cve/CVE-2025-48543/
description: "CVE-2025-48543 (Android Runtime): Exploited in the wild (CISA KEV). In multiple locations, there is a possible way to escape chrome sandbox to attack…"
type: vulnerability-record
section: "Security Digest"
date_published: 2025-09-04
date_modified: 2026-02-26
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2025-48543"
kev: true
cvss: 8.8
epss: 0.00634
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2025-48543: Android Runtime Use-After-Free Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run Android Runtime. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2025-09-04, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2025-09-25 ; treat that as the outer limit, not the target.
- EPSS 0.6% , percentile 50: FIRST’s model estimates a 0.6% chance of exploitation activity in the next 30 days, higher than 50% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Needs local access needed. Lower urgency for most teams unless an attacker could already run code on the machine.

## What it is

In multiple locations, there is a possible way to escape chrome sandbox to attack android systemserver due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

## Affected products (CVE record)

- Google Android: 16, 15, 14, 13

## Severity

- CISA-ADP CVSS 3.1: 8.8 `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`

## Exploitation

- CISA KEV: added 2025-09-04; federal due date 2025-09-25. Known ransomware use: Unknown.
- CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.63% probability of exploitation activity in the next 30 days; percentile 50.

## Sources

- [Listed in CISA KEV notes (source.android.com)](https://source.android.com/docs/security/bulletin/2025-09-01)
- [CVE.org record CVE-2025-48543](https://www.cve.org/CVERecord?id=CVE-2025-48543)
- [NVD entry CVE-2025-48543](https://nvd.nist.gov/vuln/detail/CVE-2025-48543)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-48543)
- [android.googlesource.com](https://android.googlesource.com/platform/art/+/444fc40dfb04d2ec5f74c443ed3a4dd45d3131f2)
- [source.android.com](https://source.android.com/security/bulletin/2025-09-01)

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Source page: https://erroneo.us/security/cve/CVE-2025-48543/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt