What is CVE-2023-42566?

CVE-2023-42566 is a high-severity vulnerability in Samsung Android, classified under Out-of-bounds Write. CVSS score: 7.3/10. Published 2023-12-05.

How severe is CVE-2023-42566?

High severity. CVSS v3 base score is 7.3 out of 10.

Buffer overflow in Samsung Android

CVE-2023-42566

Out-of-bound write vulnerability in libsavsvc prior to SMR Dec-2023 Release 1 allows local attackers to execute arbitrary code.

Vulnerability class: Buffer Overflow

Published 2023-12-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L.

EPSS exploit prediction

EPSS: 0.003 (15.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.9% 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 14.0
Samsung Mobile Devices — versions SMR Dec-2023 Release in Android 11, 12, 13, 14

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

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

Frequently asked questions

What is CVE-2023-42566?: CVE-2023-42566 is a high-severity vulnerability in Samsung Android, classified under Out-of-bounds Write. CVSS score: 7.3/10. Published 2023-12-05.
How severe is CVE-2023-42566?: High severity. CVSS v3 base score is 7.3 out of 10.