Security Digest · Vulnerability record · Known exploited
CVE-2023-21237: Android Pixel Information Disclosure Vulnerability
Exploited in the wild (CISA KEV). In applyRemoteView of NotificationContentInflater.java, there is a possible way to hide foreground service notification due to misleading or insufficient UI.
CISA KEV · added 2024-03-05 CVSS 6.2 Medium EPSS 0.3% · p17
Should you act?
Exploited: patch now if you run it
CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- Yes, if you run Android Pixel. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2024-03-05, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2024-03-26; treat that as the outer limit, not the target.
- EPSS 0.3%, percentile 17: FIRST’s model estimates a 0.3% chance of exploitation activity in the next 30 days, higher than 17% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Needs local access needed. Lower urgency for most teams unless an attacker could already run code on the machine.
What it is
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
CISA’s summary
Android Pixel contains a vulnerability in the Framework component, where the UI may be misleading or insufficient, providing a means to hide a foreground service notification. This could enable a local attacker to disclose sensitive information.
Weakness type: CWE-200.
Product: Android Pixel · Assigned by: google_android · Published: 2023-06-28
Affected and fixed versions
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| n/a | Android | Android-13 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADP | 3.1 | 6.2 Medium | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
- Attack vector: local access needed
- Attack complexity: low
- Privileges required: none (no login)
- User interaction: none
- Scope: unchanged
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: added 2024-03-05; federal due date 2024-03-26. Known ransomware use: Unknown.
- CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active, automatable no, technical impact partial.
- FIRST EPSS (model of 2026-10-21): 0.27% probability of exploitation activity in the next 30 days; percentile 17.
Timeline
- — CVE record published by google_android
- — Added to CISA’s Known Exploited Vulnerabilities catalog
- — CISA remediation deadline for US federal agencies
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vendor and project advisories, patches
- Listed in CISA KEV notes (source.android.com) source.android.com
Vulnerability records
- CVE.org record CVE-2023-21237 cve.org
- NVD entry CVE-2023-21237 nvd.nist.gov
Government
Other references from the CVE record and advisory
- source.android.com source.android.com
All exploited Android vulnerabilities · Today’s Security Digest