What is CVE-2023-21459?

CVE-2023-21459 is a medium-severity vulnerability in Samsung Android, classified under Use After Free. CVSS score: 5.0/10. Published 2023-03-16.

How severe is CVE-2023-21459?

Medium severity. CVSS v3 base score is 5.0 out of 10.

Use After Free in Samsung Android

CVE-2023-21459

Use after free vulnerability in decon driver prior to SMR Mar-2023 Release 1 allows attackers to cause memory access fault.

Vulnerability class: Use-After-Free

Published 2023-03-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.003 (17.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 17.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Samsung Android — versions 11.0, 12.0, 13.0
Samsung Exynos 2100
Samsung Mobile Devices — versions Android 11, 12, 13 devices with Exynos2100 chipset

Weakness classification (CWE)

CWE-416 — Use After Free

References

security.samsungmobile.com/securityUpdate.smsb (Vendor Advisory)

Frequently asked questions

What is CVE-2023-21459?: CVE-2023-21459 is a medium-severity vulnerability in Samsung Android, classified under Use After Free. CVSS score: 5.0/10. Published 2023-03-16.
How severe is CVE-2023-21459?: Medium severity. CVSS v3 base score is 5.0 out of 10.