What is the CVSS score of CVE-2026-58739?

CVE-2026-58739 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-2026-58739

EUVD-2026-79014 MEDIUM

Unintended Proxy or Intermediary ('Confused Deputy') (CWE-441)

2026-09-15 Google_Devices

GHSA-85p9-jf8f-8qhx

Privilege Escalation Google

6.7

CVSS 3.1 · Vendor: Google_Devices

View

Vulnerability Assessment

Weakness

CWE

CWE-441

OWASP Top 10:2025

A01:2025 - Broken Access Control

ASVS 5.0

V4 - API and Web Service Proxy/intermediary controls

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

A confused-deputy flaw (CWE-441) in the Android platform's message-handler initialization routine, platform_msg_handler_init in default_msg_handlers.c, lets a local process that already runs with System privileges have privileged operations performed on its behalf by a more trusted component, resulting in local privilege escalation with high impact to confidentiality, integrity and availability. Exploitation requires local execution at the System privilege level (CVSS PR:H) and no user interaction, so it is not reachable by an ordinary unprivileged app. There is no public exploit code identified and the issue is not in CISA KEV; it was published through the September 2026 Android/Pixel security bulletin, so risk to most users is conditional on already having a System-level foothold or being part of an exploit chain.

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

CVSS changed

Sep 15, 2026 - 20:37 NVD

6.7 (MEDIUM)

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 platform_msg_handler_init of default_msg_handlers.c, there is a possible confused deputy due to a confused deputy. 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.