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CVE-2026-21012 Samsung Mobile CVE debrief

CVE-2026-21012 is a medium-severity vulnerability affecting Samsung Android devices. It allows a privileged local attacker to create files with system privileges due to external control of file names in AODManager prior to SMR Apr-2026 Release 1. This vulnerability could potentially lead to local privilege escalation attacks, allowing attackers to gain elevated access to sensitive data and system components. System administrators and security teams should assess exposure and apply the security patch as soon as possible to prevent potential attacks. The vulnerability is a result of inadequate validation of file names, which enables attackers to manipulate file creation and gain unw

Vendor
Samsung Mobile
Product
Samsung Mobile Devices
CVSS
MEDIUM 6.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-13
Original CVE updated
2026-10-26
Advisory published
2026-04-13
Advisory updated
2026-10-26

Who should care

System administrators and security teams responsible for Samsung Android devices should assess exposure and apply the security patch as soon as possible.

Why it matters

CVE-2026-21012 is a medium-severity vulnerability that allows a privileged local attacker to create files with system privileges, potentially leading to local privilege escalation attacks.

  • Potential local privilege escalation attacks
  • Creation of files with system privileges
  • Increased risk of unauthorized access to sensitive data

Technical summary

CVE-2026-21012 is a medium-severity vulnerability in AODManager that allows a privileged local attacker to create files with system privileges. The vulnerability is due to external control of file names and affects Samsung Android devices prior to SMR Apr-2026 Release 1.

Defensive priority

Apply the security patch from Samsung as soon as possible to prevent potential local privilege escalation attacks.

Recommended defensive actions

  • Apply the security patch from Samsung
  • Review and update inventory of affected Samsung Android devices
  • Monitor for potential local privilege escalation attacks

Evidence notes

The CVE record and NVD entry provide details about the vulnerability, including its description, CVSS score, and affected products. However, specific details about exploitation are not provided.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-21012 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-21012

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-21012 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-21012

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.