CVE-2021-25521

MEDIUMNVD 4.04.0—

4.0

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.

CVSS v3: 4.0
EG Score: 4.0(medium)
EPSS: 19.4%
KEV: Not listed

Published

December 8, 2021

Last Modified

November 21, 2024

References (2)

mobilehttps://security.samsungmobile.com/serviceWeb.smsb?year=2021&month=12
af854a3a-2127-422b-91ae-364da2661108https://security.samsungmobile.com/serviceWeb.smsb?year=2021&month=12

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 06:43 UTCEG score recompute
2026-05-26 06:43 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2021-25521?

CVE-2021-25521 is a medium vulnerability published on December 8, 2021. 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.

When was CVE-2021-25521 disclosed?

CVE-2021-25521 was first published in the National Vulnerability Database on December 8, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-25521 actively exploited?

CVE-2021-25521 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 19.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-25521?

CVE-2021-25521 has a CVSS v3 base score of 4.0 (NVD).

How do I remediate CVE-2021-25521?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-25521, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-25521

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-25521?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)