CVE-2023-21237
Android Pixel Information Disclosure Vulnerability
Android Pixel
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
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 5 March 2024. US federal agencies were required to remediate it by 26 March 2024.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 0.3%, which is higher than 18.6% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Frequently asked questions
Is CVE-2023-21237 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2023-21237.
What does CVE-2023-21237 affect?
CVE-2023-21237 affects Android Pixel. 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
How severe is CVE-2023-21237?
CVE-2023-21237 is rated MEDIUM with a CVSS base score of 5.5. EPSS puts the probability of exploitation in the next 30 days at 0.3%, higher than 18.6% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 26 March 2024.
How should organisations respond to CVE-2023-21237?
Apply the vendor patch for Android Pixel as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.