CVE-2021-25500

Name: CVE-2021-25500
Creator: NVD / NIST
Published: 2021-11-05T03:15:07.323+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.4/10EPSS 0.10%

Last modified Jun 17, 2026

CVE-2021-25500 is a medium-severity vulnerability rated 4.4/10 on the CVSS scale. A missing input validation in HDCP LDFW prior to SMR Nov-2021 Release 1 allows attackers to overwrite TZASC allowing TEE compromise.. EPSS estimates a 0.10% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

4.4/10

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

0.10%

1.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Google	Android	10.0
Google	Android	11.0

References

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

Timeline

Published: Nov 5, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-25500?

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

How severe is CVE-2021-25500?

CVE-2021-25500 has a CVSS score of 4.4/10 (MEDIUM severity). The EPSS model estimates a 0.10% probability of exploitation in the next 30 days.

How do I fix CVE-2021-25500?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-25500?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST