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Exploited vulnerability · CISA KEV

Is CVE-2025-48543 exploited? Yes: in CISA KEV since 4 Sep 2025

Gociux · Android Runtime · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2025-48543, Android Runtime Use-After-Free Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 4 Sep 2025, the day it was published. It affects Android Runtime. If you run it, CISA's required action is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 4 Sep 2025
ransomwareNot knownno confirmed use
EPSSbelow top 10%lower predicted activity right now (it is still confirmed exploited)
severity8.8CVSS 3.1 · high
US federal due25 Sep 2025BOD 22-01 deadline

What it is

Android Runtime contains a use-after-free vulnerability potentially allowing a chrome sandbox escape leading to local privilege escalation.

VendorAndroid (17 exploited CVEs in KEV)
ProductRuntime
VulnerabilityAndroid Runtime Use-After-Free Vulnerability
Weaknessnot specified
Published4 Sep 2025
Added to KEV4 Sep 2025
Reported by (CNA)google_android

What to do

  1. Check whether you run it. Look for Runtime in your asset inventory, including appliances and cloud images. Stack check lists every exploited Android CVE at once.
  2. Apply the fix. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 4 Sep 2025.
  4. Get told next time. Email alerts when CISA adds a CVE for Android.

References

Questions

Is CVE-2025-48543 being exploited?

Yes. CISA added CVE-2025-48543 to the Known Exploited Vulnerabilities catalog on 4 Sep 2025, which means there is reliable evidence of exploitation in the wild.

Is CVE-2025-48543 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2025-48543?

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Check Android's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Runtime and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in September 2025 · Android scorecard · act-now radar.

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