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Google Chrome CVE-2026-110922

| EUVDEUVD-2026-102510 HIGH
Use After Free (CWE-416)
2026-10-15 Chrome GHSA-gxqh-349m-f6c3
8.8
CVSS 3.1 · Vendor: Chrome
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Attack ChainAIDerived

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

  1. Access
    Lure victim to crafted web page
  2. Delivery
    Serve malicious HTML invoking Prerender
  3. Exploit
    Trigger use-after-free in Prerender
  4. Execution
    Execute arbitrary code in renderer
  5. Impact
    Code execution within browser sandbox

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Memory lifecycle management
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 prior to 155.0.8059.84 and to navigate to an attacker-controlled page containing crafted HTML that exercises the Prerender feature; this user interaction (UI:R) is the primary limiting factor, as the attacker cannot trigger the flaw without the user loading the malicious content. No authentication or special privileges are needed (PR:N) and no non-default configuration is indicated - Prerender is standard Chrome functionality. The most significant limit on impact is that resulting code execution is confined to the renderer sandbox (S:U), so full system compromise would additionally require a separate sandbox-escape vulnerability.

Impact

This is a credible high-priority patching target but not an emergency. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R) describes a network-reachable, low-complexity, unauthenticated flaw that requires user interaction (visiting a crafted page), with high confidentiality, integrity and availability impact and no scope change (S:U) - consistent with code execution confined to the renderer sandbox as the description states. Chromium rates the severity Critical, and SSVC lists Technical Impact as 'total,' reinforcing the memory-corruption RCE classification. However, the signals do NOT indicate active or imminent mass exploitation: SSVC Exploitation is 'none,' the CVE is not listed in CISA KEV, Automatable is 'no,' and no EPSS score or public POC was provided in the input - so there is no public exploit identified at time of analysis. The practical ceiling on impact is the sandbox: the description explicitly says code runs 'inside the sandbox,' meaning a second sandbox-escape bug would be needed for full host compromise, which the CVSS A:H/I:H/C:H arguably overstates for host-level risk. Net: patch promptly given ubiquity and Critical rating, but current real-world exploitation risk is lower than the 8.8 alone suggests.

Exploit ScenarioDerived

An attacker hosts or compromises a web page containing specially crafted HTML that abuses Chrome's Prerender feature; when a victim using a vulnerable Chrome build (prior to 155.0.8059.84) browses to it, the use-after-free is triggered and attacker-controlled code executes within the renderer sandbox. No authentication is required (PR:N) and complexity is low (AC:L), but the victim must actively load the malicious page (UI:R), and no public exploit code was identified in the provided data.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 16, 2026

Use-after-free in Google Chrome's Prerender component allows remote attackers to execute arbitrary code inside the renderer sandbox when a victim navigates to a crafted HTML page, and Google rates the flaw Critical with a CVSS base score of 8.8. All Chrome builds prior to 155.0.8059.84 are affected, and exploitation requires user interaction (UI:R) since the attacker cannot trigger the flaw without the victim loading the malicious content, though no authentication or special privileges are needed. Vendor-released patch: 155.0.8059.84; no public exploit code or confirmed active exploitation has been identified at time of analysis, and the SSVC assessment records exploitation as none, making this a high-priority patching target rather than an emergency.

RemediationAI

Vendor-released patch: 155.0.8059.84, delivered through the Chrome Stable channel update (https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_01886704284.html) with a parallel Extended Stable update (http://chromereleases.googleblog.com/2026/10/extended-stable-update-for-desktop_01598036246.html). The primary action is to update Chrome to 155.0.8059.84 or later by relaunching the browser and using chrome://settings/help, or by pushing the update through enterprise management tooling and confirming the build via chrome://version; organizations that pin the Extended Stable channel must confirm the Extended Stable build reaches the fixed version, and because exploitation requires a victim to load attacker-controlled content, browsers left on older builds remain reachable through ordinary web browsing. No vendor-documented workaround is provided, and disabling prerendering/preloading (through Chrome's Performance preload settings or the corresponding enterprise policy) only reduces the attack surface rather than eliminating the underlying use-after-free, while degrading page-load performance and leaving other renderer attack surface intact; network filtering of malicious pages and reducing exposure to untrusted HTML remain generic compensating controls but are not substitutes for updating.

Affected VersionsENISA

Chrome 155.0.8059.84 <155.0.8059.84

Affected Packages

euvd chrome fix: 155.0.8059.84

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 vulnerability is a use-after-free (CWE-416) in Prerender, the Chrome feature that speculatively pre-renders or preloads pages the user is likely to navigate to, in order to make subsequent navigation appear instant. Prerender involves hidden renderer processes and complex navigation, document, and lifecycle object ownership; a use-after-free here means the browser frees an internal object (such as a navigation handle, document, or prerender lifecycle record) while a stale reference to it remains reachable, so crafted HTML that manipulates prerender state transitions can drive the freed memory into reuse. The result is memory corruption that the input tags classify as enabling remote code execution and denial of service; because the affected component is the Prerender pipeline in the renderer, the code execution is confined to the Chrome sandbox (CVSS S:U), so achieving full system compromise would require chaining a separate sandbox-escape vulnerability. The CPE cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* reflects that the flaw spans the Chrome product line up to the fixed build, and the CVSS vector AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H confirms an unauthenticated remote attack with a low-complexity path that depends on victim interaction.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (Chrome) PRIMARY 8.8 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI 8.8 HIGH

Remote crafted HTML needs no privileges (PR:N) but requires the victim to load the page (UI:R); code runs within the sandbox so scope is unchanged (S:U) with full renderer-context C/I/A impact.

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

Primary rating from Vendor (Chrome).

CVSS VectorVendor: Chrome

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

Lifecycle Timeline

4
CVSS changed
Oct 16, 2026 - 03:25 NVD
8.8 (None) 8.8 (HIGH)
Patch available
Oct 15, 2026 - 23:03 EUVD
CVE Published
Oct 15, 2026 - 22:04 cve.org
HIGH 8.8
CVE Published
Oct 15, 2026 - 22:04 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

Use after free in Prerender in Google Chrome prior to 155.0.8059.84 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Critical)

Executive ViewAI

Why It Matters

Google Chrome versions prior to 155.0.8059.84 contain a high-severity vulnerability that could allow attackers to execute arbitrary code on user systems when they visit a malicious webpage. No public exploit identified at time of analysis, but the widespread use of Chrome and the potential for remote code execution make timely patching critical. Vendor-released patch: 155.0.8059.84; leadership should prioritize updating all affected systems to protect organizational data.

Business Impact: High
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.2%
Top 85% exploitable
Prevalence
Ubiquitous
Google Chrome is among the most widely deployed browsers worldwide
Social Media
3
Sightings
Data Quality
6 sources
Confidence: High

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 0.2%
Patch available Yes
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
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
High
Technical Impact
Total

Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Use-after-free vulnerabilities occur when a program continues to access memory through a pointer after that memory has been deallocated.

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.

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

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

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