CVE-2023-21375

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-10-30 · updated 2026-06-17
Weakness: CWE-190

Description

In Sysproxy, there is a possible out of bounds write due to an integer underflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Affected products

Android: before 14.0 — fixed in 14.0

How to fix

Upgrade to a fixed version: Android 14.0. Check the vendor advisory for mitigations.

References

https://source.android.com/docs/security/bulletin/android-14
https://source.android.com/docs/security/bulletin/android-14

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