What is the CVSS score of CVE-2026-58755?

CVE-2026-58755 has a CVSS 3.1 base score of 6.7 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Google CVE-2026-58755

EUVD-2026-79018 MEDIUM

Protection Mechanism Failure (CWE-693)

2026-09-15 Google_Devices

GHSA-5467-987c-c26v

Privilege Escalation Google

6.7

CVSS 3.1 · Vendor: Google_Devices

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Vulnerability Assessment

Weakness

CWE

CWE-693

OWASP Top 10:2025

A06:2025 - Insecure Design

ASVS 5.0

V15 - Secure Coding and Architecture Protection mechanism completeness

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 15, 2026

Local privilege escalation in the Android kernel's arm-smmu-v3 driver (smmu_install_nested_ste) lets a process that already runs with System execution privileges turn a logic error in SMMU stream-table-entry handling into full kernel-level compromise of confidentiality, integrity, and availability. Only devices whose kernel exposes the ARM SMMUv3 driver in a nested-translation configuration are affected, and Google rates it Moderate with a CVSS base of 6.7 (AV:L/PR:H), meaning exploitation presupposes a highly privileged local foothold rather than remote or unauthenticated access. There is no indication of public exploit code and the issue is not listed in CISA KEV; Google's Pixel bulletin of 2026-09-01 ships the fix.

Affected VersionsENISA

Android Android kernel

Affects your stack

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (Google_Devices) PRIMARY 6.7 MEDIUM

AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Primary rating from Vendor (Google_Devices) · only source for this CVE.

CVSS VectorVendor: Google_Devices

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Sep 15, 2026 - 18:34 cve.org

UNKNOWN (no severity yet)

CVE Published

Sep 15, 2026 - 18:34 cve.org

MEDIUM 6.7

DescriptionCVE.org

In smmu_install_nested_ste 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 System execution privileges needed. User interaction is not needed for exploitation.

Threat Intelligence Overview

EPSS Score

0.1%

Top 100% exploitable

Data Quality

4 sources

Confidence: Medium

EUVD 🇯🇵JVN

NVD

CVE.org

EPSS

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC No

EPSS 0.1%

Patch available No

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Defer

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +34

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Privilege Escalation HIGH

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.