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Google Android EUVDEUVD-2026-115555

| CVE-2026-28643 MEDIUM
Improper Input Validation (CWE-20)
2026-11-02 google_android GHSA-gmvm-v566-vgg9
6.2
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 malicious local app
  2. Exploit
    Invoke unguarded interface missing permission check
  3. Execution
    Supply malformed input
  4. Impact
    Trigger denial of service on device

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V2 - Validation and Business Logic Input validation, allowlisting
Exploitation Conditions

Exploitation requires local access to the device - per AV:L, this is a locally-installed app or on-device actor, not a remote network attacker. The flaw is a missing permission check reachable 'in multiple locations' (per the Android bulletin boilerplate), so no additional execution privileges and no user interaction are needed (PR:N/UI:N). Impact is limited to denial of service (A:H only; C:N/I:N) affecting the device's availability, with no data disclosure or code execution. Limiting factors: the attacker must already be able to run code on the device, and the affected versions are Android 16, 16-qpr2, and 17 - devices on other branches or already patched per the 2026-11-01 bulletin are not exposed. The specific vulnerable component is not named in the available sources.

Impact

This is a moderate-severity local availability issue, not an urgent remote threat. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, base 6.2) confirms the attack is LOCAL, not network-reachable, with impact confined to availability (denial of service) and no confidentiality or integrity loss. On Android, AV:L with PR:N realistically means a malicious or malformed local app (or on-device actor) can trigger the condition without holding special execution privileges. The supporting signals all point to low real-world urgency: EPSS is 0.11% (1st percentile), there is no CISA KEV listing (not a US agency scope product), and no public exploit or PoC reference is present in the input. The vuln.today decision label is 'this_month' - a routine patch cadence, not act_now or emergency. These signals are consistent with one another: a low-probability, locally-scoped DoS that should be remediated on a normal monthly cycle rather than treated as an active-exploitation emergency. No signals conflict. The main caveat is detail: the description is Android's generic boilerplate ('in multiple locations, missing permission check') and does not name the specific component, so the precise trigger cannot be verified from available sources.

Exploit ScenarioDerived

A malicious application installed on the device, running with no special permissions, invokes an interface that is missing a permission check and supplies input that crashes or hangs the affected component, producing a local denial of service. No user interaction is required. No public exploit code or PoC reference is present in the input.

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 – Nov 03, 2026

Local denial of service in Google Android 16, Android 16-qpr2, and Android 17 lets code already running on the device impair availability by reaching functionality that lacks a required permission check in multiple locations, with no extra execution privileges or user interaction required. Severity is moderate (CVSS 6.2, availability-only) and the issue is not remotely reachable; EPSS is 0.11% and no public exploit has been identified at time of analysis. The Android Security Bulletin dated 2026-11-01 is the vendor reference.

RemediationAI

Install the Android platform security update associated with the Android Security Bulletin dated 2026-11-01 (https://source.android.com/docs/security/bulletin/2026/2026-11-01); the provided data does not give a specific patch version or build identifier beyond that bulletin. No vendor workaround is described in the available references. Because exploitation requires local code execution (AV:L), reducing the ability to run untrusted apps on affected devices, for example through managed-device policy that blocks sideloaded or untrusted application sources, can lower exposure, but it does not replace the bulletin update and may interfere with legitimate app deployment. Verify device patch level against the bulletin before treating it as fixed.

Affected VersionsENISA

Android 17
Android 16-qpr2
Android 16

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Technical ContextAI · show details

The affected platform is Google Android, with CPE cpe:2.3:a:google:android:*:*:*:*:*:*:*:* and EUVD listing Android 16, Android 16-qpr2, and Android 17. The bulletin describes a missing permission check in multiple locations that results in local denial of service; the assigned CWE is CWE-20 (improper input validation), although the description frames the root cause as an authorization/permission-check failure. The CVSS vector AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H confirms the attacker must have local access to the device, needs no additional privileges or user interaction, and can affect only availability. The specific Android component, code path, and exact trigger are not named in the available sources.

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Severity by source

Vendor (google_android) PRIMARY 6.2 MEDIUM
AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vuln.today AI 6.2 MEDIUM

Local vector (on-device app), no privileges or interaction needed per the description's 'no additional execution privileges', and availability-only impact from a denial of service.

3.1 AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.0 AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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
None
Integrity
None
Availability
High

Lifecycle Timeline

3
CVSS changed
Nov 03, 2026 - 21:22 NVD
6.2 (MEDIUM)
CVE Published
Nov 02, 2026 - 19:53 cve.org
MEDIUM 6.2
CVE Published
Nov 02, 2026 - 19:53 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

In multiple locations, there is a possible denial of service due to a missing permission check. This could lead to local denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.

Threat Intelligence Overview

EPSS Score
0.1%
Top 99% exploitable
Prevalence
Ubiquitous
Android is one of the most widely deployed OS platforms globally
Data Quality
4 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 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
Scheduled
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact· derived
High

Priority Score

31
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +31
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

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