Out-of-Bounds Write Vulnerability in Blockchain Keystore by Samsung
CVE-2025-21021

6.7MEDIUM

Key Information:

Vendor

Samsung
Status
Blockchain Keystore
Vendor
CVE Published:
6 August 2025

What is CVE-2025-21021?

The vulnerability allows local privileged attackers to exploit an out-of-bounds write in the drawing pinpad feature of the Blockchain Keystore. This can lead to unintended memory manipulation if the attacking party has local access to the device. The flaw affects all versions prior to 1.3.17.2, making it imperative for users to upgrade to the latest version to ensure their security.

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Affected Version(s)

Blockchain Keystore 1.3.17.2

References

https://security.samsungmobile.com/serviceWeb.smsb?year=2...

CVSS V3.1

Score:
6.7
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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