What is CVE-2021-25490?

CVE-2021-25490 is a medium-severity vulnerability in Google Android, classified under Improper Authentication. CVSS score: 6.0/10. Published 2021-10-06.

How severe is CVE-2021-25490?

Medium severity. CVSS v3 base score is 6.0 out of 10.

Is CVE-2021-25490 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Google Android

CVE-2021-25490

A keyblob downgrade attack in keymaster prior to SMR Oct-2021 Release 1 allows attacker to trigger IV reuse vulnerability with privileged process.

Vulnerability class: Broken Authentication

EPSS: 0.008 (51.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:L.

Affected products

Google Android — versions 9.0, 10.0, 11.0
Samsung Mobile Devices — versions P(9.0), Q(10.0), R(11.0)

Weakness classification (CWE)

CWE-287 — Improper Authentication

Public proof-of-concept exploits

shakevsky/keybuster

References

mobile.security@samsung.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-25490?: CVE-2021-25490 is a medium-severity vulnerability in Google Android, classified under Improper Authentication. CVSS score: 6.0/10. Published 2021-10-06.
How severe is CVE-2021-25490?: Medium severity. CVSS v3 base score is 6.0 out of 10.
Is CVE-2021-25490 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.