CVE-2023-20959

Name: CVE-2023-20959
Creator: NVD / NIST
Published: 2023-03-24T20:15:09.867+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.09%

Last modified Jun 17, 2026

CVE-2023-20959 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In AddSupervisedUserActivity, guest users are not prevented from starting the activity due to missing permissions checks. This could lead to local escalation of privilege with no additional execution privileges needed. EPSS estimates a 0.09% chance of exploitation in the next 30 days.

Description

In AddSupervisedUserActivity, guest users are not prevented from starting the activity due to missing permissions checks. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-13Android ID: A-249057848

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.09%

0.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Google	Android	13.0

References

https://source.android.com/security/bulletin/2023-03-01Vendor Advisory
https://source.android.com/security/bulletin/2023-03-01Vendor Advisory

Timeline

Published: Mar 24, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-20959?

How severe is CVE-2023-20959?

CVE-2023-20959 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.09% probability of exploitation in the next 30 days.

How do I fix CVE-2023-20959?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-20959?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST