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Android EUVDEUVD-2026-92604

| CVE-2026-49937 HIGH
Buffer Overflow (CWE-119)
2026-10-05 google_android GHSA-cmhf-gv53-c792
7.8
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 low-privilege app
  2. Delivery
    Invoke MessageQueueBase operation
  3. Exploit
    Trigger incorrect bounds check (OOB read)
  4. Execution
    Leak adjacent kernel/framework memory
  5. Impact
    Escalate to elevated privileges

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, buffer size validation
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires local access on the device: the attacker must already be running low-privilege code (PR:L), typically a locally installed or already-compromised application, and invoke the vulnerable MessageQueueBase code paths. No user interaction is required (UI:N) and no non-default configuration is indicated - any affected build (Android 14, 15, 16, 16-qpr2, 17) is susceptible. The primary limiting factor is the local attack vector (AV:L): there is no remote or network-facing exploitation path, so the attacker needs prior code execution on the target device, which substantially narrows realistic exposure to malicious-app or post-compromise scenarios.

Impact

CVSS 3.1 base score is 7.8 (High) with vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, indicating a local attacker with low privileges (e.g., an installed unprivileged app) can exploit this with low complexity and no user interaction to achieve full confidentiality, integrity, and availability impact - consistent with a kernel/framework local privilege escalation on Android. The underlying flaw is an out-of-bounds read (CWE-119) from an incorrect bounds check in MessageQueueBase.h; an OOB read in isolation is primarily a confidentiality/info-leak primitive, so the I:H/A:H ratings imply Google assesses it as chainable into full privilege escalation rather than a pure read. No EPSS score, KEV listing, or POC reference was provided in the input, so exploitation probability cannot be quantified from this data. This is NOT confirmed as actively exploited and no public exploit was identified at time of analysis; the local attack vector (AV:L) meaningfully constrains real-world risk because an attacker must already have code execution on the device. Net: a legitimate patch priority for the current Android monthly cycle given the LPE impact and ubiquitous platform, but not an emergency remote threat - missing EPSS/KEV/POC signals mean widespread automated exploitation is unconfirmed.

Exploit ScenarioDerived

A malicious or compromised low-privilege Android app invokes the affected MessageQueueBase functionality, triggering the incorrect bounds check to read out of bounds and leak adjacent memory. The attacker uses the leaked data (e.g., pointers or tokens) to defeat memory protections and escalate to higher privileges without any user interaction. No public proof-of-concept was identified in the provided data.

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 – Oct 05, 2026

Local privilege escalation on Android 14, 15, 16, 16-qpr2, and 17 stems from an out-of-bounds read in MessageQueueBase.h caused by an incorrect bounds check, allowing an attacker with low-privilege local code execution to gain elevated privileges with high impact to confidentiality, integrity, and availability (CVSS 7.8). Exploitation requires a locally installed malicious or compromised app and no user interaction, and no public exploit has been identified at the time of analysis.

RemediationAI

Apply the October 2026 Android Security Bulletin (2026-10-01) update to affected Android 14, 15, 16, 16-qpr2, and 17 devices; patched builds are distributed as monthly security patch levels, so ensure the device reports the October 2026 SPL or later. Until patching, compensate by preventing installation of untrusted applications, enforcing Google Play Protect and app-sandbox restrictions, and monitoring for unexpected privilege escalation activity, though these measures do not eliminate the underlying out-of-bounds read.

Affected VersionsENISA

Android 17
Android 14
Android 16-qpr2
Android 15
Android 16

Affects your stack

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Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The flaw resides in MessageQueueBase.h, a native code header implementing message queue handling within the Android framework, where an improper bounds check (CWE-119) allows reads past the end of a memory buffer. The CPE cpe:2.3:a:google:android confirms the affected platform is Google Android; the EUVD lists Android 14, 15, 16, 16-qpr2, and 17 as vulnerable builds. As a local, low-privilege (PR:L) attack with low complexity (AC:L), the issue fits the pattern of a framework-level local privilege escalation that could expose sensitive data, corrupt memory, or disrupt system services.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (google_android) PRIMARY 7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 7.8 HIGH

Local app-level access needed (AV:L/PR:L), no user interaction (UI:N), low complexity; OOB read chains to full privilege escalation per the bulletin, justifying C/I/A:H.

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:L/AC:L/AT:N/PR:L/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
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
CVSS changed
Oct 05, 2026 - 20:22 NVD
7.8 (HIGH)
CVE Published
Oct 05, 2026 - 18:23 cve.org
HIGH 7.8
CVE Published
Oct 05, 2026 - 18:23 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

In multiple functions of MessageQueueBase.h, there is a possible out of bounds read due to an incorrect bounds check. 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 (CVE-2026-49937) affects Google Android versions 14, 15, 16, 16-qpr2, and 17, allowing a malicious or compromised app already installed on a device to gain elevated privileges and access sensitive data with high impact to confidentiality, integrity, and availability. No vendor patch is currently available, and no public exploit has been identified at the time of analysis, but the broad footprint of affected devices across the enterprise mobile estate makes this a priority for leadership attention. Because exploitation requires only a locally installed app and no user interaction, a single sideloaded or compromised application could put corporate data at risk on unmanaged or lightly managed devices.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis; interim mitigations include enforcing app allowlisting and managed Google Play only, blocking sideloading and unknown app sources via MDM, enabling Google Play Protect, applying work profile separation and least-privilege app policies, monitoring for suspicious local privilege-escalation activity, and accelerating device upgrade or replacement for unsupported models once a fix ships.

Threat Intelligence Overview

EPSS Score
0.1%
Top 100% exploitable
Prevalence
Ubiquitous
Android is one of the most widely deployed OS platforms globally
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
High
Technical Impact
Total

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +39
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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