CVE-2026-21123
Quick assessment
Affected
Samsung Mobile Samsung Mobile Devices
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.
在 SMR 2026年10月版 Release 1 之前的 Locksettings 中，存在权限管理不当的问题。该漏洞允许拥有 root 权限的本地特权攻击者在首次解锁之前，访问与当前用户绑定的配置文件的敏感数据。
Possible ATT&CK Techniques 1 AI
T1530 · Data from Cloud StorageAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Samsung Mobile | Samsung Mobile Devices | SMR Oct-2026 Release in Android 14, 15, 16, 17< * |
unaffected |
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I. Basic Information for CVE-2026-21123
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Improper privilege management in Locksettings prior to SMR Oct-2026 Release 1 allows local privileged attackers with root privilege to access data of the tied profile in before first unlock.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Samsung Mobile | Samsung Mobile Devices | SMR Oct-2026 Release in Android 14, 15, 16, 17 ~ * | - |
|
II. Public POCs for CVE-2026-21123
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Vendor Advisories for CVE-2026-21123 (1)
Same Patch Batch · Samsung Mobile · 2026-10-12 · 26 CVEs total
| CVE-2026-21120 | 8.9 HIGH | WSM服务UAF漏洞：本地任意代码执行 |
| CVE-2026-21124 | 8.6 HIGH | 三星libsimba.heifdec库远程代码执行漏洞 |
| CVE-2026-21125 | 8.6 HIGH | libsimba SMR Oct-2026 任意代码执行漏洞 |
| CVE-2026-21139 | 7.3 HIGH | Samsung Continuity Service<4.6.1217.0访问控制漏洞 |
| CVE-2026-21114 | 7.0 HIGH | MediaTek SMR Oct-2026 R1 libsmkvextractor越界写入漏洞 |
| CVE-2026-21122 | 7.0 HIGH | libsamsungtts.so越界写入漏洞 |
| CVE-2026-21127 | 6.9 MEDIUM | 三星账号<15.7.01.1组件不当导出漏洞 |
| CVE-2026-21118 | 6.9 MEDIUM | Android DownloadProvider未授权访问漏洞 |
| CVE-2026-21121 | 6.9 MEDIUM | CmcCore SMR Oct-2026 Release 1前权限处理不当漏洞 |
| CVE-2026-21126 | 6.9 MEDIUM | 三星libsimba.heifdec远程代码执行漏洞（SMR Oct-2026前版本） |
| CVE-2026-21138 | 6.9 MEDIUM | Smart Switch <3.7.73数据验证不足致恶意应用安装 |
| CVE-2026-21136 | 6.8 MEDIUM | Samsung Smart Switch <3.7.73 不恰当授权漏洞 |
| CVE-2026-21134 | 6.1 MEDIUM | Samsung Flow<4.9.22.4认证缺陷致敏感信息泄露 |
| CVE-2026-21132 | 6.0 MEDIUM | 三星浏览器<30.0.5.24存在XSS漏洞 |
| CVE-2026-21135 | 5.9 MEDIUM | 三星浏览器<30.0.5.6权限控制不当致敏感信息泄露 |
| CVE-2026-21129 | 5.1 MEDIUM | 三星Samsung Checkout <5.1.03.1 权限提升漏洞 |
| CVE-2026-21128 | 5.1 MEDIUM | 三星Checkout<5.1.03.1活动启动漏洞 |
| CVE-2026-21130 | 5.1 MEDIUM | 三星Checkout 5.1.03.1前版本输入验证错误漏洞 |
| CVE-2026-21133 | 5.1 MEDIUM | Samsung Flow v4.9.22.1前路径遍历漏洞 |
| CVE-2026-21137 | 5.1 MEDIUM | 三星Smart Switch<3.7.73路径遍历漏洞 |
Showing top 20 of 26 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-21123
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