CVE-2021-25500

View on CVE.org

Published Nov 5, 2021 CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed

Description

A missing input validation in HDCP LDFW prior to SMR Nov-2021 Release 1 allows attackers to overwrite TZASC allowing TEE compromise.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Samsung Mobile

Samsung Mobile Devices

affected

Version	Status	Constraints
`Select Q(10.0), R(11.0) devices with Exynos 980, 9820, 9830, 2100 chipset`	affected	< SMR Nov-2021 Release 1

Configuration 1 [-]

AND

OR	cpe:2.3:o:google:android:10.0:::::::*
	cpe:2.3:o:google:android:11.0:::::::*

OR	cpe:2.3:h:samsung:exynos_2100:-:::::::*
	cpe:2.3:h:samsung:exynos_980:-:::::::*
	cpe:2.3:h:samsung:exynos_9820:-:::::::*
	cpe:2.3:h:samsung:exynos_9830:-:::::::*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2021-12396	A missing input validation in HDCP LDFW prior to SMR Nov-2021 Release 1 allows attackers to overwrite TZASC allowing TEE compromise.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required High

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

Access Vector Local

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.103% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=11

History

No history.

Subscriptions

Google Android

Samsung Exynos 2100 Exynos 980 Exynos 9820 Exynos 9830

Weaknesses

Sources

CVE record Updated: Aug 3, 2024, 8:03 PM

Status: PUBLISHED
Assigner: Samsung Mobile
Published: Nov 5, 2021, 2:03 AM
Updated: Aug 3, 2024, 8:03 PM
Reserved: Jan 19, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:42 AM

Status: Modified
Published: Nov 5, 2021, 3:15 AM
Modified: Jun 17, 2026, 3:42 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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