CVE-2023-21337

HIGH

Android < 14.0 - Unauthenticated App Installation Detection via InputMethod Side Channel

Title source: llm
STIX 2.1

Description

In InputMethod, there is a possible way to determine whether an app is installed, without query permissions, due to side channel information disclosure. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

References (1)

Core 1
Core References

Scores

CVSS v3 7.8
EPSS 0.0012
EPSS Percentile 1.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-203
Status published
Products (1)
google/android < 14.0
Published Oct 30, 2023
Tracked Since Feb 18, 2026