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    CVE-2025-21021

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

    Published:Aug 6, 2025
    Last Modified:Feb 26, 2026
    EPS:Aug 6, 2025
    EPSS Score:0.0001
    CVSS Score:5.7

    Affected Products

    Vendor
    Samsung
    Product
    Blockchain Keystore

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2025-21017 (CVSS 6.3) — Out-of-bounds write in detaching crypto box in Blockchain Keystore prior to version 1.3.17.2 allows local priv…
    CVE-2025-20901 (CVSS 4.4) — Out-of-bounds read in Blockchain Keystore prior to version 1.3.16.5 allows local privileged attackers to read …
    CVE-2025-20900 (CVSS 6.3) — Out-of-bounds write in Blockchain Keystore prior to version 1.3.16.5 allows local privileged attackers to writ…
    CVE-2024-49406 (CVSS 6.7) — Improper validation of integrity check value in Blockchain Keystore prior to version 1.3.16 allows local attac…
    CVE-2023-30722 (CVSS 5.5) — Protection Mechanism Failure in bc_tui trustlet from Samsung Blockchain Keystore prior to version 1.3.13.5 all…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High