← gociux.comall exploited CVEs

Exploited vulnerability · CISA KEV

Is CVE-2020-0041 exploited? Yes: in CISA KEV since 3 Nov 2021

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

Yes. CVE-2020-0041, Android Kernel Out-of-Bounds Write Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 3 Nov 2021, 603 days after it was published. It affects Android Kernel. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 3 Nov 2021
ransomwareNot knownno confirmed use
EPSSbelow top 10%lower predicted activity right now (it is still confirmed exploited)
severity7.8CVSS 3.1 · high
US federal due3 May 2022BOD 22-01 deadline

What it is

Android Kernel binder_transaction of binder.c contains an out-of-bounds write vulnerability due to an incorrect bounds check that could allow for local privilege escalation. This vulnerability was observed chained with CVE-2019-2215 and CVE-2020-0069 under exploit chain "AbstractEmu."

VendorAndroid (17 exploited CVEs in KEV)
ProductAndroid Kernel
VulnerabilityAndroid Kernel Out-of-Bounds Write Vulnerability
WeaknessCWE-20
Published10 Mar 2020
Added to KEV3 Nov 2021
Reported by (CNA)google_android

What to do

  1. Check whether you run it. Look for Android Kernel in your asset inventory, including appliances and cloud images. Stack check lists every exploited Android CVE at once.
  2. Apply the fix. Apply updates per vendor instructions.
  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 10 Mar 2020.
  4. Get told next time. Email alerts when CISA adds a CVE for Android.

Other exploited CVEs in Android Kernel

References

Questions

Is CVE-2020-0041 being exploited?

Yes. CISA added CVE-2020-0041 to the Known Exploited Vulnerabilities catalog on 3 Nov 2021, which means there is reliable evidence of exploitation in the wild.

Is CVE-2020-0041 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-2020-0041?

Apply updates per vendor instructions. Check Android's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Android Kernel 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 November 2021 · Android scorecard · act-now radar.

Running Android in a regulated environment?

We check exposure across your estate, patch or mitigate with your team, and set up detection for what attackers do after exploiting it.

Get in touch →