CVE-2025-21020 Details
Description
Out-of-bounds write in creating bitmap images in Blockchain Keystore prior to version 1.3.17.2 allows local privileged attackers to write out-of-bounds memory.
A high-severity out-of-bounds write vulnerability has been identified in the Blockchain Keystore application, prior to version 1.3.17.2. This vulnerability allows local privileged attackers to write to out-of-bounds memory by exploiting improper input validation when creating bitmap images. The issue has been addressed in version 1.3.17.2.
Users can update to Blockchain Keystore version 1.3.17.2 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Aug 13, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://security.samsungmobile.com/serviceWeb.smsb?year=2025&month=08 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| samsung blockchain keystore | < 1.3.17.2 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Aug 15, 2025 | Initial Analysis | [email protected] |
| Aug 6, 2025 | New CVE Received | [email protected] |