CVE-2023-21255

Name: CVE-2023-21255
Creator: NVD / NIST
Published: 2023-07-13T00:15:24.053+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.19%

Last modified Jun 17, 2026

CVE-2023-21255 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In multiple functions of binder.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

Description

In multiple functions of binder.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

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

0.19%

8.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Google	Android	All versions
Debian	Debian Linux	10.0
Debian	Debian Linux	11.0

References

https://android.googlesource.com/kernel/common/+/1ca1130ec62dPatch
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20240119-0010/
https://source.android.com/security/bulletin/2023-07-01Patch, Vendor Advisory
https://www.debian.org/security/2023/dsa-5480Third Party Advisory
https://android.googlesource.com/kernel/common/+/1ca1130ec62dPatch
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20240119-0010/
https://source.android.com/security/bulletin/2023-07-01Patch, Vendor Advisory
https://www.debian.org/security/2023/dsa-5480Third Party Advisory

Timeline

Published: Jul 13, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-21255?

How severe is CVE-2023-21255?

CVE-2023-21255 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.

How do I fix CVE-2023-21255?

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-2023-21255?

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

Scan your code now

Source: NVD / NIST