What is CVE-2016-3884?

CVE-2016-3884 is a medium-severity vulnerability in Google Android, classified under Improper Access Control. CVSS score: 5.5/10. Published 2016-09-11.

How severe is CVE-2016-3884?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Google Android

CVE-2016-3884

server/notification/NotificationManagerService.java in the Notification Manager Service in Android 6.x before 2016-09-01 and 7.0 before 2016-09-01 lacks uid checks, which allows attackers to bypass intended restrictions on method calls via a crafted application, aka internal bug 29421441.

Published 2016-09-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.004 (35.9th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Google Android — versions 6.0, 6.0.1, 7.0

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

source.android.com/security/bulletin/2016-09-01.html (Vendor Advisory)
www.securitytracker.com/id/1036763 (vdb-entry)
www.securityfocus.com/bid/92875 (vdb-entry)
android.googlesource.com/platform/frameworks/base/+/61e9103b5725965568e46657f47… (Patch, Issue Tracking)

Frequently asked questions

What is CVE-2016-3884?: CVE-2016-3884 is a medium-severity vulnerability in Google Android, classified under Improper Access Control. CVSS score: 5.5/10. Published 2016-09-11.
How severe is CVE-2016-3884?: Medium severity. CVSS v3 base score is 5.5 out of 10.