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HIGH · CVSS 8.8 CISA Known Exploited Vulnerability

CVE-2025-48543

Android Runtime Use-After-Free Vulnerability

Android Runtime

In multiple locations, there is a possible way to escape chrome sandbox to attack android system_server 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.

CVSS
8.8
HIGH
EPSS
0.6%
30-day exploitation
Ransomware groups
0
recorded exploiting
Published
4 Sep 2025
CWE-416

Exploitation status

CISA Known Exploited Vulnerabilities

Listed by CISA on 4 September 2025. US federal agencies were required to remediate it by 25 September 2025.

EPSS — exploitation probability

FIRST puts the probability of exploitation activity in the next 30 days at 0.6%, which is higher than 46.5% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Frequently asked questions

Is CVE-2025-48543 being exploited by ransomware groups?

No ransomware group in this database is currently recorded as exploiting CVE-2025-48543.

What does CVE-2025-48543 affect?

CVE-2025-48543 affects Android Runtime. In multiple locations, there is a possible way to escape chrome sandbox to attack android system_server 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.

How severe is CVE-2025-48543?

CVE-2025-48543 is rated HIGH with a CVSS base score of 8.8. EPSS puts the probability of exploitation in the next 30 days at 0.6%, higher than 46.5% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 25 September 2025.

How should organisations respond to CVE-2025-48543?

Apply the vendor patch for Android Runtime as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.