Description
Improper handling of insufficient permission in CmcCore prior to SMR Oct-2026 Release 1 allows local attackers to use the privileged APIs.
Published: 2026-10-12
Score: 6.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Privilege Escalation
Action: Immediate Patch
AI Analysis

Impact

The flaw in CmcCore centers on insufficient permission checks, allowing an attacker who has local or physical access to invoke privileged APIs. This can enable the attacker to read, modify, or delete sensitive data, alter system settings, or install malicious software, thereby compromising the confidentiality, integrity, and availability of the device.

Affected Systems

Samsung Mobile Devices running CmcCore versions prior to SMR Oct‑2026 Release 1 are affected. Devices shipped with earlier releases lack the permission‑enforcement patch.

Risk and Exploitability

The CVSS base score of 6.9 indicates a moderate risk. The EPSS score of less than 1% shows a very low probability of exploitation, and the vulnerability is not listed in CISA KEV. The likely attack vector is local, requiring physical or local access to the device. With no publicly available exploit at this time, the primary mitigation is to apply the vendor’s firmware update or, if unavailable, to limit usage of the vulnerable APIs by restricting application privileges.

Generated by OpenCVE AI on October 17, 2026 at 10:39 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the firmware update to SMR Oct‑2026 Release 1 or a later version that fixes the permission handling flaw.
  • If an update is not yet available, revoke or restrict privileged API access for applications through device management or app permission settings.
  • Monitor installed applications for anomalous use of privileged APIs and consider disabling or removing apps that may exploit the vulnerability.

Generated by OpenCVE AI on October 17, 2026 at 10:39 UTC.

Tracking

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Advisories

No advisories yet.

History

Sat, 17 Oct 2026 11:00:00 +0000

Type Values Removed Values Added
Title Local Privilege Escalation via Improper Permission Handling in CmcCore

Sat, 17 Oct 2026 09:15:00 +0000

Type Values Removed Values Added
Title Local Privilege Escalation via Improper Permissions in Samsung CmcCore
Weaknesses CWE-640

Fri, 16 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-280
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 12 Oct 2026 07:15:00 +0000

Type Values Removed Values Added
First Time appeared Samsung Mobile
Samsung Mobile samsung Mobile Devices
Vendors & Products Samsung Mobile
Samsung Mobile samsung Mobile Devices

Mon, 12 Oct 2026 06:45:00 +0000

Type Values Removed Values Added
Title Local Privilege Escalation via Improper Permissions in Samsung CmcCore
Weaknesses CWE-640

Mon, 12 Oct 2026 05:00:00 +0000

Type Values Removed Values Added
Description Improper handling of insufficient permission in CmcCore prior to SMR Oct-2026 Release 1 allows local attackers to use the privileged APIs.
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}


Subscriptions

Samsung Mobile Samsung Mobile Devices
cve-icon MITRE

Status: PUBLISHED

Assigner: SamsungMobile

Published:

Updated: 2026-10-16T16:11:46.984Z

Reserved: 2025-12-11T01:33:35.832Z

Link: CVE-2026-21121

cve-icon Vulnrichment

Updated: 2026-10-16T16:08:26.583Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-12T05:17:00.640

Modified: 2026-10-16T17:17:33.523

Link: CVE-2026-21121

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-17T10:45:07Z

Weaknesses
  • CWE-280

    Improper Handling of Insufficient Permissions or Privileges