Auth bypass in Google Android

CVE-2021-25451

A PendingIntent hijacking in NetworkPolicyManagerService prior to SMR Sep-2021 Release 1 allows attackers to get IMSI data.

Vulnerability class: Broken Authentication

EPSS: 0.002 (13.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

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

References

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

Frequently asked questions

What is CVE-2021-25451?: CVE-2021-25451 is a low-severity vulnerability in Google Android, classified under Improper Authentication. CVSS score: 3.3/10. Published 2021-09-09.
How severe is CVE-2021-25451?: Low severity. CVSS v3 base score is 3.3 out of 10.