CVE-2026-58766

Received Received - Intake

ARM SMMUv3 Privilege Escalation Vulnerability

Publication date: 2026-09-15

Last updated on: 2026-09-18

Assigner: Google Devices

Description

In multiple functions of arm-smmu-v3.c, there is a possible escalation of privilege due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-09-15

Last Modified

2026-09-18

Generated

2026-10-06

AI Q&A

2026-09-16

EPSS Evaluated

2026-10-04

NVD

CVE-2026-58766

EUVD

EUVD-2026-79020

Affected Vendors & Products

Vendor	Product	Version / Range
google	android	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-693	The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

Attack-Flow Graph

Executive Summary

This vulnerability is in the arm-smmu-v3.c file where a logic error allows for privilege escalation. It enables a local attacker to gain higher privileges without needing additional execution rights or user interaction.

Impact Analysis

An attacker could exploit this to gain elevated privileges on your system, potentially allowing them to take control of affected devices or access sensitive data.

Compliance Impact

This vulnerability allows local privilege escalation with no user interaction required, which could enable unauthorized access to sensitive data. This may violate compliance requirements under GDPR (data protection) and HIPAA (health information security) by potentially exposing confidential or protected information.

Mitigation Strategies

Apply vendor patches or updates for arm-smmu-v3.c immediately. Since this is a privilege escalation issue with CVSS score 7.8, prioritize patching systems using affected ARM SMMUv3 implementations. Monitor official vendor advisories for specific mitigation steps.

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