What is CVE-2025-21018?

CVE-2025-21018 is a medium-severity vulnerability in Samsung Blockchain Keystore, classified under Out-of-bounds Read. CVSS score: 4.4/10. Published 2025-08-06.

How severe is CVE-2025-21018?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Out-of-bounds Read in Samsung Blockchain Keystore

CVE-2025-21018

Out-of-bounds read in Blockchain Keystore prior to version 1.3.17.2 allows local privileged attackers to read out-of-bounds memory.

Vulnerability class: Buffer Overflow

EPSS: 0.001 (4.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

Affected products

Samsung Blockchain_keystore
Samsung Mobile Blockchain Keystore — versions 1.3.17.2

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

mobile.security@samsung.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-21018?: CVE-2025-21018 is a medium-severity vulnerability in Samsung Blockchain Keystore, classified under Out-of-bounds Read. CVSS score: 4.4/10. Published 2025-08-06.
How severe is CVE-2025-21018?: Medium severity. CVSS v3 base score is 4.4 out of 10.