CVE-2021-25521

Severity: low (CVSS 3.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-12-08 · updated 2026-06-17
Weakness: CWE-285

Description

Insecure caller check in sharevia deeplink logic prior to Samsung Internet 16.0.2 allows unstrusted applications to get current tab URL in Samsung Internet.

Affected products

Samsung Mobile Samsung Internet: before 16.0.2 — fixed in 16.0.2

How to fix

Upgrade to a fixed version: Samsung Mobile Samsung Internet 16.0.2. Check the vendor advisory for mitigations.

References

https://security.samsungmobile.com/serviceWeb.smsb?year=2021&month=12
https://security.samsungmobile.com/serviceWeb.smsb?year=2021&month=12

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