CVE-2025-21020
Quick assessment
Affected
Samsung Mobile Blockchain Keystore
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
SAMSUNG Blockchain Keystore是韩国三星（SAMSUNG）公司的创建、存储、管理和备份私钥的系统工具。 SAMSUNG Blockchain Keystore 1.3.17.2之前版本存在安全漏洞，该漏洞源于创建位图图像时越界写入，可能导致本地特权攻击者越界写入内存。
Possible ATT&CK Techniques 1 AI
T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2025-21020
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
SAMSUNG Blockchain Keystore 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SAMSUNG Blockchain Keystore是韩国三星（SAMSUNG）公司的创建、存储、管理和备份私钥的系统工具。 SAMSUNG Blockchain Keystore 1.3.17.2之前版本存在安全漏洞，该漏洞源于创建位图图像时越界写入，可能导致本地特权攻击者越界写入内存。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Samsung Mobile | Blockchain Keystore | 1.3.17.2 | - |
|
II. Public POCs for CVE-2025-21020
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2025-21020 (1)
Same Patch Batch · Samsung Mobile · 2025-08-06 · 16 CVEs total
| CVE-2025-21017 | 6.3 MEDIUM | SAMSUNG Blockchain Keystore 安全漏洞 |
| CVE-2025-21013 | 6.2 MEDIUM | SAMSUNG Mobile devices 安全漏洞 |
| CVE-2025-21010 | 6.0 MEDIUM | SAMSUNG Mobile devices 安全漏洞 |
| CVE-2025-21021 | 5.7 MEDIUM | SAMSUNG Blockchain Keystore 安全漏洞 |
| CVE-2025-21019 | 5.5 MEDIUM | SAMSUNG Health 安全漏洞 |
| CVE-2025-21012 | 5.5 MEDIUM | SAMSUNG Mobile devices 安全漏洞 |
| CVE-2025-21011 | 5.5 MEDIUM | SAMSUNG Mobile devices 安全漏洞 |
| CVE-2025-21018 | 4.4 MEDIUM | SAMSUNG Blockchain Keystore 安全漏洞 |
| CVE-2025-21016 | 4.3 MEDIUM | SAMSUNG Mobile devices 安全漏洞 |
| CVE-2025-21014 | 4.3 MEDIUM | SAMSUNG Mobile devices 安全漏洞 |
| CVE-2025-21015 | 4.0 MEDIUM | SAMSUNG Mobile devices 安全漏洞 |
| CVE-2025-20990 | 4.0 MEDIUM | SAMSUNG Mobile devices 安全漏洞 |
| CVE-2025-21024 | 3.3 LOW | SAMSUNG Smart View 安全漏洞 |
| CVE-2025-21023 | 3.3 LOW | SAMSUNG WcsExtension Android Watch 安全漏洞 |
| CVE-2025-21022 | 3.3 LOW | SAMSUNG Galaxy Wearable 安全漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2025-21020
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