What is CVE-2021-1048?

CVE-2021-1048 is a high-severity vulnerability in Google Android, classified under Use After Free. CVSS score: 7.8/10. Published 2021-12-15.

How severe is CVE-2021-1048?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2021-1048 known to be exploited?

Yes. CVE-2021-1048 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-05-23), indicating it is being actively exploited. 18 public proof-of-concept repositories are indexed.

Use After Free in Google Android

CVE-2021-1048

In ep_loop_check_proc of eventpoll.c, there is a possible way to corrupt memory 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 ex…

Vulnerability class: Use-After-Free

EPSS: 0.010 (60.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Google Android
N/a Android — versions Android kernel

Weakness classification (CWE)

CWE-416 — Use After Free

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-05-23. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-06-13.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

security@android.com (Patch, x_refsource_MISC, Vendor Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (Third Party Advisory, US Government Resource)

Frequently asked questions

What is CVE-2021-1048?: CVE-2021-1048 is a high-severity vulnerability in Google Android, classified under Use After Free. CVSS score: 7.8/10. Published 2021-12-15.
How severe is CVE-2021-1048?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2021-1048 known to be exploited?: Yes. CVE-2021-1048 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-05-23), indicating it is being actively exploited. 18 public proof-of-concept repositories are indexed.