What is CVE-2025-20943?

CVE-2025-20943 is a medium-severity vulnerability in Samsung Android, classified under Out-of-bounds Write. CVSS score: 6.4/10. Published 2025-04-08.

How severe is CVE-2025-20943?

Medium severity. CVSS v3 base score is 6.4 out of 10.

Buffer overflow in Samsung Android

CVE-2025-20943

Out-of-bounds write in secfr trustlet prior to SMR Apr-2025 Release 1 allows local privileged attackers to cause memory corruption.

Vulnerability class: Buffer Overflow

Published 2025-04-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.001 (3.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Samsung Android — versions 13.0, 14.0, 15.0
Samsung Mobile Devices — versions SMR Apr-2025 Release in Android 13, 14, 15

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

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

Frequently asked questions

What is CVE-2025-20943?: CVE-2025-20943 is a medium-severity vulnerability in Samsung Android, classified under Out-of-bounds Write. CVSS score: 6.4/10. Published 2025-04-08.
How severe is CVE-2025-20943?: Medium severity. CVSS v3 base score is 6.4 out of 10.