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.
Conclusion & alert: CVE-2025-48543 is rated Active Exploitation (78.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.29%). Core evidence: CISA KEV confirms active exploitation (added 2025-09-04) affecting Android / Runtime. a weakness (CWE-416) Unauthenticated remote administrative access may be possible. Mandatory action: The CISA remediation deadline has passed—treat as an emergency patch priority.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
: Android Runtime Use-After-Free Vulnerability · CISA KEV detail
: 2025-09-04
: 2025-09-25
: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-01-31 | 0.25% | 0.29% | +0.04% |
| 2 | 2026-01-29 | 0.30% | 0.25% | -0.05% |
| 3 | 2026-01-28 | — | 0.30% | — |
Full EPSS history (12 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.0 | 6.0 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| URL | Tags |
|---|---|
| https://android.googlesource.com/platform/art/+/444fc40dfb04d2ec5f74c443ed3a4dd45d3131f2 | Patch Product |
| https://source.android.com/security/bulletin/2025-09-01 | Vendor Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-48543 | Third Party Advisory US Government Resource |