What is CVE-2023-21499?

CVE-2023-21499 is a high-severity vulnerability in Samsung Android, classified under Out-of-bounds Write. CVSS score: 8.2/10. Published 2023-05-04.

How severe is CVE-2023-21499?

High severity. CVSS v3 base score is 8.2 out of 10.

Buffer overflow in Samsung Android

CVE-2023-21499

Out-of-bounds write vulnerability in TA_Communication_mpos_encrypt_pin in mPOS TUI trustlet prior to SMR May-2023 Release 1 allows local attackers to execute arbitrary code.

Vulnerability class: Buffer Overflow

Published 2023-05-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (7.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Samsung Android — versions 13.0
Samsung Mobile Devices — versions Select Android 13 devices

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

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

Frequently asked questions

What is CVE-2023-21499?: CVE-2023-21499 is a high-severity vulnerability in Samsung Android, classified under Out-of-bounds Write. CVSS score: 8.2/10. Published 2023-05-04.
How severe is CVE-2023-21499?: High severity. CVSS v3 base score is 8.2 out of 10.