CVE-2021-0522

Name: CVE-2021-0522
Creator: NVD / NIST
Published: 2021-06-21T17:15:08.697+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.38%

Last modified Jun 17, 2026

CVE-2021-0522 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In ConnectionHandler::SdpCb of connection_handler.cc, there is a possible out of bounds read due to a use after free. This could lead to remote information disclosure with no additional execution privileges needed. EPSS estimates a 1.38% chance of exploitation in the next 30 days.

Description

In ConnectionHandler::SdpCb of connection_handler.cc, there is a possible out of bounds read due to a use after free. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-9 Android-10Android ID: A-174182139

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.38%

68.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Google	Android	9.0
Google	Android	10.0
Google	Android	11.0

References

https://source.android.com/security/bulletin/2021-06-01Patch, Vendor Advisory
https://source.android.com/security/bulletin/2021-06-01Patch, Vendor Advisory

Timeline

Published: Jun 21, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-0522?

How severe is CVE-2021-0522?

CVE-2021-0522 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.38% probability of exploitation in the next 30 days.

How do I fix CVE-2021-0522?

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-2021-0522?

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

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Source: NVD / NIST