CVE-2023-21237

Name: CVE-2023-21237
Creator: NVD / NIST
Published: 2023-06-28T18:15:16.56+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10Actively ExploitedEPSS 0.26%

Last modified Jun 17, 2026

CVE-2023-21237 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. In applyRemoteView of NotificationContentInflater.java, there is a possible way to hide foreground service notification due to misleading or insufficient UI. This could lead to local information disclosure with no additional execution privileges needed. CISA has confirmed active exploitation in the wild. EPSS estimates a 0.26% chance of exploitation in the next 30 days.

Description

In applyRemoteView of NotificationContentInflater.java, there is a possible way to hide foreground service notification due to misleading or insufficient UI. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-13Android ID: A-251586912

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

0.26%

17.7th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Mar 26, 2024.

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Google	Android	13.0

References

https://source.android.com/security/bulletin/pixel/2023-06-01Vendor Advisory
https://source.android.com/security/bulletin/pixel/2023-06-01Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-21237Third Party Advisory, US Government Resource

Timeline

Published: Jun 28, 2023
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-21237?

How severe is CVE-2023-21237?

CVE-2023-21237 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2023-21237?

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-2023-21237?

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

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Source: NVD / NIST