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Google Android EUVDEUVD-2026-115422

| CVE-2026-59000 HIGH
Unintended Proxy or Intermediary ('Confused Deputy') (CWE-441)
2026-11-02 google_android GHSA-jxgx-cwq2-wv3g
8.4
CVSS 3.1 · Vendor: google_android
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Install or compromise unprivileged local app
  2. Exploit
    Invoke confused-deputy privileged component
  3. Execution
    Bypass permission check
  4. Impact
    Gain elevated privileges

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V4 - API and Web Service Proxy/intermediary controls
Exploitation Conditions

Exploitation requires local access to an affected device - in practice, a malicious or already-compromised unprivileged app running on the device - against Android 16-qpr2 or Android 17 builds. Per CVSS (PR:N/UI:N), no pre-existing privileges and no user interaction are needed once the attacker has on-device code execution. The principal limiting factors are: (1) the Local attack vector, which precludes remote exploitation and requires the attacker to first place/run code on the device; and (2) version scope, limited to Android 16-qpr2 and Android 17. The exact feature or component acting as the 'confused deputy' is not described in the available sources ('multiple locations').

Impact

Severity signals and real-world-risk signals diverge here. CVSS 3.1 rates this 8.4 (High) driven by total impact (C:H/I:H/A:H) and a low-complexity, no-privilege, no-interaction trigger - but the attack vector is Local (AV:L), so exploitation requires the attacker to already be running code on the device, typically via a malicious or compromised app. The SSVC framework reinforces this nuanced picture: Technical Impact is 'total,' yet Exploitation is 'none' (no observed or public exploitation) and Automatable is 'no,' which is why the vuln.today priority resolves to 'this_week' rather than act_now/emergency. No EPSS score was supplied, this CVE is NOT in CISA KEV, and no PoC or exploit reference is present in the input. Net assessment: a genuine, high-impact local privilege-escalation issue worth patching on a near-term (this-week) cadence, but not a drop-everything internet-exposed emergency - the local-only vector and absence of any exploitation evidence meaningfully lower immediate risk versus the raw 8.4. Note the AV:L/PR:N combination describes an unprivileged on-device attacker, not a remote one; do not read 8.4 as remotely reachable.

Exploit ScenarioDerived

A malicious or compromised app already installed on an affected device invokes a more-privileged Android component that performs an action on the caller's behalf without verifying the caller's permissions (a confused-deputy flaw), bypassing permission enforcement to escalate its own privileges. No user interaction and no additional execution privileges are required. No public exploit was identified at the time of analysis.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Nov 02, 2026

Local privilege escalation in Google Android 16 QPR2 and Android 17 lets an unprivileged app already running on the device bypass permission checks through a confused-deputy flaw and gain elevated access, with no user interaction required. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:N, C/I/A High) produces a score of 8.4, but the attack surface is confined to local code execution on the affected builds. No public exploit was identified at the time of analysis, CISA SSVC records exploitation as none with total technical impact, and the Android security bulletin dated 2026-11-01 is the vendor reference for fixes.

RemediationAI

Apply the fixes published in the Android security bulletin dated 2026-11-01 (https://source.android.com/docs/security/bulletin/2026/2026-11-01) and update Android 16 QPR2 and Android 17 devices to the patched build identifiers listed there for each branch; the bulletin is the authoritative source for the exact build strings, and no separate fix version is given in the supplied data. Because the vector is local (AV:L) and requires code execution on the device, exposure is reduced by limiting installation of untrusted or sideloaded applications and by removing or isolating apps of unknown provenance - trade-offs include restricting legitimate sideloading workflows and possible loss of functionality - but such measures only narrow the prerequisite attack surface and do not substitute for installing the vendor patch.

Affected VersionsENISA

Android 16-qpr2
Android 17

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Technical ContextAI · show details

CWE-441 (Confused Deputy) describes a situation where a more privileged component performs an operation on behalf of a less privileged caller without adequately verifying that the caller is entitled to that operation. On Android this typically means a system service or privileged process reachable over Binder IPC that trusts caller-supplied parameters or identifiers; the advisory states the flaw exists in 'multiple locations,' so more than one component may expose the same class of permission bypass. The exact feature or component acting as the deputy is not described in the available sources. The CVSS vector (AV:L/AC:L/PR:N/UI:N) confirms the flaw is reachable locally without pre-existing privileges and without user interaction, meaning the attacker must first get code running on the device - typically as an unprivileged app - before crossing the permission boundary. Scope is limited to Android 16 QPR2 and Android 17 per the EUVD affected-version data, and the vendor reference is the Android security bulletin dated 2026-11-01.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (google_android) PRIMARY 8.4 HIGH
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 8.4 HIGH

A local unprivileged app triggers the confused deputy with no interaction (AV:L/AC:L/PR:N/UI:N); privilege escalation yields full C/I/A impact within the same authorization scope (S:U).

3.1 AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
4.0 AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (google_android).

CVSS VectorVendor: google_android

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
CVSS changed
Nov 02, 2026 - 21:22 NVD
8.4 (HIGH)
CVE Published
Nov 02, 2026 - 19:54 cve.org
UNKNOWN (no severity yet)
CVE Published
Nov 02, 2026 - 19:54 cve.org
HIGH 8.4

DescriptionCVE.org

In multiple locations, there is a possible permission bypass due to a confused deputy. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Executive ViewAI

Why It Matters

A high-severity local privilege escalation flaw in Google Android 16 QPR2 and Android 17 allows an already-installed malicious app to bypass permission checks and gain elevated access without any user interaction. This puts corporate data on Android devices at risk, as a compromised app could read, modify, or exfiltrate sensitive information. Leadership should prioritize patching because unpatched devices remain vulnerable until Google releases a fix.

Business Impact: Medium
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: enforce app installation only from trusted sources via MDM, enable Google Play Protect, review and restrict app permissions, and isolate or monitor high-risk devices until a patch is available.

Threat Intelligence Overview

EPSS Score
0.1%
Top 99% exploitable
Prevalence
High
Android is ubiquitous, but affected builds are limited to recent 16-qpr2/17 releases
Data Quality
5 sources
Confidence: Medium

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 HIGH
CISA KEV No
Public POC No
EPSS 0.1%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
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
Defer
Exploitation
None
System Exposure· derived
Small
Automatable
No
Human Impact
Medium
Technical Impact
Total

Priority Score

42
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +42
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

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

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