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Google Chrome EUVDEUVD-2026-66004

| CVE-2026-79139 HIGH
Improper Input Validation (CWE-20)
2026-08-25 Chrome GHSA-35xr-2w3x-9wvx
7.5
CVSS 3.1 · Vendor: Chrome
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Severity by source

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

Sandbox escape warrants S:C; all other metrics align with chained renderer compromise requiring user interaction and high attack complexity.

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

Primary rating from Vendor (Chrome).

CVSS VectorVendor: Chrome

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

4
Analysis Generated
Aug 26, 2026 - 16:01 vuln.today
CVSS changed
Aug 26, 2026 - 15:52 NVD
7.5 (None) 7.5 (HIGH)
CVE Published
Aug 25, 2026 - 20:10 cve.org
UNKNOWN (no severity yet)
CVE Published
Aug 25, 2026 - 20:10 cve.org
HIGH 7.5

DescriptionCVE.org

Improper input validation in Media in Google Chrome on on Windows prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

AnalysisAI

Sandbox escape in Google Chrome's Media component on Windows allows a remote attacker who has already compromised the renderer process to execute arbitrary code outside Chrome's sandbox via a crafted HTML page. Affected versions are all Chrome releases on Windows prior to 152.0.7977.65. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Recon
Attacker hosts crafted HTML page
Delivery
Victim opens page in Chrome on Windows
Exploit
Renderer process exploited via separate vulnerability
Install
Compromised renderer sends malformed Media input
C2
Input validation flaw triggered in Media component
Execute
Arbitrary code executes outside Chrome sandbox
Impact
OS-level code execution achieved

Vulnerability AssessmentAI

Exploitation Exploitation requires two sequential conditions to be satisfied: first, the attacker must have independently compromised the Chrome renderer process (a separate, prerequisite vulnerability not covered by this CVE); second, the victim must visit or be redirected to a crafted HTML page while using a Chrome version on Windows prior to 152.0.7977.65. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 score of 7.5 (AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H) accurately captures the high complexity of this attack - it requires both user interaction and a pre-compromised renderer process, making it inherently a chained exploit rather than a standalone vector. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker first compromises a victim's Chrome renderer process on Windows - for example, by chaining this attack with a separate renderer exploit delivered via a malicious or attacker-controlled website. Once the renderer is compromised, the attacker's crafted HTML page triggers the Media component's improper input validation flaw, causing code to execute outside the Chrome sandbox with broader OS-level access. …
Remediation The primary fix is to update Google Chrome on Windows to version 152.0.7977.65 or later, confirmed by the Chrome Stable Channel update advisory at https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, begin deploying Google Chrome 152.0.7977.65 or later across all Windows systems and audit current Chrome versions in use throughout the organization. …

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EUVD-2026-66004 vulnerability details – vuln.today

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