OOB Write in Blockchain Keystore <1.3.17.2 (Local Privileged)
CVE-2025-21020 Published on August 6, 2025

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.

NVD

Vulnerability Analysis

CVE-2025-21020 is exploitable with local system access, and requires user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.

Attack Vector:
LOCAL
Attack Complexity:
HIGH
Privileges Required:
HIGH
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
NONE

Products Associated with CVE-2025-21020

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Samsung Blockchain Keystore
 

Affected Versions

Samsung Mobile Blockchain Keystore Version 1.3.17.2 is unaffected by CVE-2025-21020

Exploit Probability

EPSS
0.01%
Percentile
1.50%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.