CVE-2021-25503

Name: CVE-2021-25503
Creator: NVD / NIST
Published: 2021-11-05T03:15:10.947+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.7/10EPSS 0.11%

Last modified Jun 17, 2026

CVE-2021-25503 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. Improper input validation vulnerability in HDCP prior to SMR Nov-2021 Release 1 allows attackers to arbitrary code execution.. EPSS estimates a 0.11% chance of exploitation in the next 30 days.

Description

Improper input validation vulnerability in HDCP prior to SMR Nov-2021 Release 1 allows attackers to arbitrary code execution.

Metrics

CVSS 3.1

6.7/10

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

EPSS Probability

0.11%

1.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Google	Android	8.1
Google	Android	9.0
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-2021-25503?

Improper input validation vulnerability in HDCP prior to SMR Nov-2021 Release 1 allows attackers to arbitrary code execution.

How severe is CVE-2021-25503?

CVE-2021-25503 has a CVSS score of 6.7/10 (MEDIUM severity). The EPSS model estimates a 0.11% probability of exploitation in the next 30 days.

How do I fix CVE-2021-25503?

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-2021-25503?

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

Scan your code now

Source: NVD / NIST