Out-of-Bounds Write Vulnerability in Blockchain Keystore by Samsung
CVE-2025-21020

6.7MEDIUM

Key Information:

Vendor

Samsung
Status
Blockchain Keystore
Vendor
CVE Published:
6 August 2025

What is CVE-2025-21020?

An out-of-bounds write vulnerability exists within the Blockchain Keystore, which allows local privileged attackers to exploit the system by writing to memory locations beyond the allocated bounds. This can lead to potential data corruption or system instability. Users are advised to update to version 1.3.17.2 to mitigate this risk.

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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