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Google Chrome for Android CVE-2026-113225

| EUVDEUVD-2026-105446 MEDIUM
Buffer Overflow (CWE-119)
2026-10-20 chrome-cve-admin@google.com GHSA-q9m3-5p87-w95g
6.5
CVSS 3.1 · Vendor: google
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Attack ChainAIDerived

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

  1. Access
    Lure victim to crafted HTML page
  2. Exploit
    Page parsing triggers memory corruption
  3. Execution
    Read out-of-bounds memory inside sandbox
  4. Impact
    Disclose sensitive in-process data

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 the victim to use Google Chrome on Android at a version prior to 156.0.8078.47 and to load attacker-controlled content - the CVSS UI:R and the description's 'via a crafted HTML page' confirm active user interaction (visiting or rendering a malicious page) is mandatory; there is no passive, zero-click vector described. No authentication is required of the attacker (PR:N) and no special victim-side configuration is needed beyond running the default browser. Limiting factors: the required user interaction, the need for the target to be on an unpatched Android build, and that the described impact is confined to reading memory inside the sandbox (C:H only; I:N/A:N), so the standalone bug yields information disclosure rather than code execution or a confirmed sandbox escape.

Impact

Signals are consistent and point to a moderate, not urgent, priority. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N, base 6.5) describes a network-reachable, unauthenticated flaw that requires user interaction (the victim must load a crafted HTML page) and yields only a confidentiality impact - reading memory inside the renderer sandbox, with no integrity or availability effect. EPSS is low at 0.22% (12th percentile), the CVE is NOT on the CISA KEV list, and no public exploit has been identified, so there is no evidence of active or imminent mass exploitation. The Chromium 'High' security-severity label reflects the class of bug (memory corruption/CWE-119) rather than demonstrated real-world weaponization, and it is consistent with the information-disclosure-only outcome described. All signals agree: this is a legitimately important browser patch to deploy via normal update cadence, but it is not a drop-everything emergency. One caveat: the description says the attacker can 'potentially read memory inside the sandbox,' meaning impact may be an information leak contained within the sandbox boundary rather than a full escape - this is a disclosure primitive that is often chained with other bugs, so treat the standalone CVSS as a floor, not a ceiling.

Exploit ScenarioDerived

An attacker hosts a malicious web page (or injects malicious content into a page the victim already trusts) and lures an Android Chrome user into visiting it. When the page's crafted HTML is parsed, it triggers the memory-corruption condition in the browser, allowing the attacker's script to read out-of-bounds memory within the sandbox and potentially disclose sensitive in-process data. No public proof-of-concept or exploit code has been identified at time of analysis.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 21, 2026

Memory corruption in Google Chrome on Android before version 156.0.8078.47 lets a remote, unauthenticated attacker who convinces a victim to open a crafted HTML page potentially read memory from inside the browser sandbox. The flaw is an out-of-bounds memory access (CWE-119) scored CVSS 6.5 with C:H/I:N/A:N, so the demonstrated impact is information disclosure confined to the sandbox rather than code execution or a confirmed sandbox escape, and exploitation is gated by mandatory user interaction (UI:R) on an unpatched Android build. No public exploit code or active exploitation has been identified at time of analysis, EPSS is low at 0.22% (12th percentile), and Google has released a fixed build.

RemediationAI

Primary fix: upgrade Google Chrome for Android to 156.0.8078.47 or later via the Google Play Store (or managed Play/enterprise distribution), as announced in the stable channel update at https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_02018666648.html - this is a vendor-released patch and no separate out-of-band workaround is documented. On managed fleets, force the update through an app-version compliance policy and verify the installed build string rather than relying on auto-update, since delayed Play Store rollout leaves devices exposed indefinitely. If a device cannot be updated promptly, compensating controls carry real trade-offs: blocking the affected build from enterprise resources via conditional-access/device-compliance rules reduces exposure but locks out the user entirely; disabling or removing Chrome (or routing mobile browsing through a proxy that terminates suspicious HTML) narrows the attack surface at the cost of usability and does not fix the underlying memory-safety defect; and because the vector requires the victim to open a crafted page, restricting browsing to allowlisted domains materially lowers risk while breaking general web access. There is no confirmed zero-click path, so user-awareness messaging about unsolicited links on mobile is a weak but low-cost supplement, not a substitute for patching.

Affected VersionsENISA

Chrome 156.0.8078.47 <156.0.8078.47

Affected Packages

euvd chrome fix: 156.0.8078.47

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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

Technical ContextAI · show details

The root cause is CWE-119, improper restriction of operations within the bounds of a memory buffer, which in Chromium's multi-process architecture typically manifests as an out-of-bounds read in the renderer or another sandboxed process when parsing attacker-supplied HTML or script-driven content. Because Chrome renders untrusted web content in a heavily restricted sandbox, a memory-safety failure there normally yields only intra-sandbox disclosure - consistent with the assessed CVSS vector (confidentiality high, integrity and availability none) and with the description's phrasing that memory is read 'inside the sandbox'. Exploitation therefore requires the attacker to deliver a crafted page to a victim running an affected Android build (AV:N, PR:N, UI:R) and to defeat any additional mitigations before the leaked memory would be useful for further stages; the bug alone is not described as a sandbox escape. CWE-119 is a broad parent class covering the unchecked buffer handling that Chromium's security team rated High severity, and the CPE/version data places affected installations strictly below the 156.0.8078.47 stable-channel build.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (google) PRIMARY 6.5 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
vuln.today AI 6.5 MEDIUM

Remote crafted page with no auth (AV:N/PR:N) but mandatory user interaction (UI:R); memory read gives C:H with no integrity or availability impact and no scope change.

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

Primary rating from Vendor (google).

CVSS VectorVendor: google

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

Lifecycle Timeline

4
CVSS changed
Oct 21, 2026 - 16:54 NVD
6.5 (MEDIUM)
Patch available
Oct 20, 2026 - 23:20 EUVD
CVE Published
Oct 20, 2026 - 22:19 cve.org
MEDIUM 6.5
CVE Published
Oct 20, 2026 - 22:19 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

Memory corruption in Browser in Google Chrome on on Android prior to 156.0.8078.47 allowed a remote attacker to potentially read memory inside the sandbox via a crafted HTML page. (Chromium security severity: High)

Threat Intelligence Overview

EPSS Score
0.2%
Top 88% exploitable
Prevalence
Ubiquitous
Google Chrome on Android is the dominant mobile browser worldwide
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 0.2%
Patch available Yes
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
Open
Automatable· derived
No
Human Impact· derived
High

Priority Score

32
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +32
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

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.

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