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Google Android EUVDEUVD-2026-92615

| CVE-2026-58854 HIGH
Access of Resource Using Incompatible Type (Type Confusion) (CWE-843)
2026-10-05 google_android GHSA-f3r3-3xxf-p3j4
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
    Gain low-privilege local foothold (malicious app)
  2. Delivery
    Invoke vulnerable component path
  3. Exploit
    Trigger type confusion / memory corruption
  4. Execution
    Execute code in higher-privileged context
  5. Impact
    Escalate privileges on device

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Type safety enforcement
MITRE ATT&CK

1 technique across 1 tactic: Execution

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

Exploitation Conditions

Exploitation requires the attacker to already have local, low-privilege code execution on the device - for example, a malicious or compromised app running in its own sandbox (PR:L, AV:L) - and no user interaction (UI:N). There are no special configuration prerequisites noted; the flaw is reachable in default Android builds within the affected versions (Android 14 through 17, including 16-qpr2). The key limiting factor is the need for an existing on-device foothold rather than remote reachability, which caps real-world risk to scenarios where an attacker can first get code onto the device (malicious app install, prior RCE, or physical/local access).

Impact

This is a genuine but not emergency-grade priority. The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N) describes a local, low-complexity attack that requires the attacker to already hold low-level privileges (e.g., an installed/running app or local code execution context) with no user interaction, yielding total impact (C:H/I:H/A:H) via type-confusion memory corruption - consistent with the SSVC 'Technical Impact: total' rating. However, the exploitation signals argue against treating this as a drop-everything issue: SSVC 'Exploitation: none' and 'Automatable: no' align with no CISA KEV listing and no public POC identified, so this is currently a patch-on-cycle privilege-escalation bug rather than one under active mass exploitation. EPSS is not provided in the input, so the quantitative exploitation probability cannot be stated. The signals are internally consistent (local vector matches 'local escalation of privilege' in the description; PR:L matches the need for a foothold), with no contradictions to flag. The practical risk is that such Android EoP bugs are frequently chained behind a separate remote/initial-access vulnerability or a malicious app to achieve full device compromise, so it is material for high-value or at-risk fleets.

Exploit ScenarioDerived

A malicious or compromised application already running on an Android device triggers the type-confusion condition in the affected component to corrupt memory and escalate from its sandboxed low-privilege context to a higher-privileged one, requiring no user interaction. No public exploit code has been identified at the time of analysis, and the SSVC framework rates it as not automatable, implying a non-trivial, likely bespoke exploit. Given AC:L, once a working primitive is developed, reliable exploitation is plausible.

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 in Google Android 14 through 17 (including 16-qpr2) arises from type-confusion memory corruption in multiple platform locations, letting a process that already has a low-privilege foothold on the device gain high-privilege code execution with confidentiality, integrity, and availability impact. Based on the CVSS vector (AV:L/AC:L/PR:L/UI:N), exploitation requires the attacker to already run code locally in a low-privileged context - a malicious or compromised app in its sandbox - and needs no user interaction and no special configuration; the flaw is reachable in default builds of the affected versions. There is no public exploit identified at time of analysis, CISA SSVC rates exploitation as none and the issue as not automatable, and a vendor-released fix is available through the October 2026 Android Security Bulletin (patch level 2026-10-01), so this is a genuine but not emergency-grade priority - the key limiting factor is the need for an existing on-device foothold rather than remote reachability.

RemediationAI

Apply the October 2026 Android Security Bulletin update referenced at https://source.android.com/docs/security/bulletin/2026/2026-10-01, and verify the device reports security patch level 2026-10-01 or later; because Android updates are delivered by OEMs and carriers, users on affected Android 14, 15, 16, 16-qpr2, and 17 builds should check Settings for the pending monthly update and device fleets should be tracked against the 2026-10-01 patch level. Since exploitation requires an existing local low-privilege foothold (AV:L/PR:L) with no user interaction (UI:N) and no special configuration, the practical compensating controls are those that keep untrusted code off the device and reduce the blast radius: enforce Google Play Protect, restrict installation to trusted sources and block sideloading via managed-device policies (trade-off: limits legitimate enterprise and developer workflows that depend on sideloaded or internal apps), and for high-value targets require apps be distributed through managed Play channels. Where the hardware supports it, enabling Memory Tagging Extension (MTE) on ARMv9-class devices can make this class of type-confusion memory corruption substantially harder to exploit; the trade-offs are a performance/memory overhead and the fact that MTE is not available on the full range of affected devices. Note that the referenced bulletin is the vendor advisory for this patch level; no standalone fix version number is provided in the available data beyond that patch level, so do not rely on unverified build numbers.

Affected VersionsENISA

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

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 root cause class is CWE-843 (type confusion), a memory-safety defect in which an object or pointer is interpreted as a different type than intended, allowing out-of-bounds reads/writes or attacker-controlled memory corruption; the vendor bulletin reports the issue in multiple locations, meaning more than one code path or component in the platform is affected rather than a single isolated function. The CPE string cpe:2.3:a:google:android:*:*:*:*:*:*:*:* identifies this as a core Google Android (AOSP) platform issue rather than a third-party application, and the associated tags (Privilege Escalation, Memory Corruption, Buffer Overflow) are consistent with an in-process memory-safety bug reachable from an untrusted app context. Because the flaw lives in the operating system layer beneath the app sandbox, successful corruption can escape the application's privilege boundary, which is why the assessed impact is total (C:H/I:H/A:H) despite the local attack vector and low-privilege prerequisite. The SSVC assessment (Exploitation: none, Automatable: no, Technical Impact: total) indicates that while the per-incident impact would be severe, the need for a pre-existing local execution primitive limits how broadly and automatically the issue can be leveraged.

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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 privilege escalation from a low-privileged app context (AV:L, PR:L) with no user interaction and low complexity, yielding full compromise of the device (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 (None) 7.8 (HIGH)
CVE Published
Oct 05, 2026 - 18:24 cve.org
HIGH 7.8
CVE Published
Oct 05, 2026 - 18:24 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

In multiple locations, there is a possible memory corruption due to type confusion. 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

Google Android 14 through 17 (including 16-qpr2) is affected by a high-severity local privilege-escalation flaw that allows an authenticated local low-privilege process to gain high-privilege code execution, with potential confidentiality, integrity, and availability impact on managed mobile devices. There is no public exploit identified at time of analysis, and exploitation requires an existing on-device foothold, so the immediate enterprise risk is concentrated in high-value users, BYOD, and mobile fleets that permit untrusted apps. Leadership should prioritize mobile device inventory, patch verification against the referenced October 2026 Android Security Bulletin, and monitoring for local privilege-escalation activity.

Business Impact: High
Compensating Controls

Apply vendor patch if October 2026 Android Security Bulletin patch level 2026-10-01 is confirmed; otherwise, restrict local untrusted app execution, enforce application allowlisting, use Android Enterprise work profiles, monitor for privilege-escalation behavior, and maintain rapid wipe/rebuild capability for high-risk devices.

Threat Intelligence Overview

EPSS Score
0.1%
Top 100% exploitable
Prevalence
Ubiquitous
Android is a dominant mobile OS deployed across billions of devices
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.

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.

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