CVE-2021-39740

Name: CVE-2021-39740
Creator: NVD / NIST
Published: 2022-03-30T16:15:09.02+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.10%

Last modified Jun 17, 2026

CVE-2021-39740 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. In Messaging, there is a possible way to bypass attachment restrictions due to improper input validation. This could lead to local information disclosure with no additional execution privileges needed. EPSS estimates a 0.10% chance of exploitation in the next 30 days.

Description

In Messaging, there is a possible way to bypass attachment restrictions due to improper input validation. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12LAndroid ID: A-209965112

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.10%

1.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Google	Android	12.1

References

https://source.android.com/security/bulletin/android-12lVendor Advisory
https://source.android.com/security/bulletin/android-12lVendor Advisory

Timeline

Published: Mar 30, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39740?

How severe is CVE-2021-39740?

CVE-2021-39740 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.10% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39740?

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-2021-39740?

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

Scan your code now

Source: NVD / NIST