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Google Chrome CVE-2026-87489

| EUVDEUVD-2026-74469 HIGH
Buffer Overflow (CWE-119)
2026-09-09 Chrome GHSA-75jh-cw99-rpg7
8.8
CVSS 3.1 · Vendor: Chrome
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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

AV:N and PR:N correct for extension distribution; UI:R required for extension installation; S:U reflects sandbox containment with no scope change.

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:A/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
Analysis Generated
Sep 09, 2026 - 14:26 vuln.today
Patch available
Sep 09, 2026 - 01:03 EUVD
CVE Published
Sep 09, 2026 - 00:10 cve.org
UNKNOWN (no severity yet)
CVE Published
Sep 09, 2026 - 00:10 cve.org
HIGH 8.8

DescriptionCVE.org

Memory corruption in V8 in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted Chrome extension. (Chromium security severity: Low)

AnalysisAI

Memory corruption in V8, Chrome's JavaScript engine, allows an attacker who can get a user to install a crafted Chrome extension to execute arbitrary code confined within the Chrome sandbox, affecting all Chrome versions prior to 153.0.8010.36. Despite the CVSS 8.8 base score, Chromium's own security team rates this 'Low' severity, reflecting that exploitation is bounded by Chrome's sandbox and does not constitute a full OS-level compromise without a separate sandbox escape primitive. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation The target user must install a crafted Chrome extension created by the attacker - this is the mandatory delivery prerequisite. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The provided CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) scores 8.8 High, but the Chromium security team's own 'Low' severity rating is a material signal that the risk is overstated in isolation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Update Google Chrome to version 153.0.8010.36 or later via the built-in updater or from https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, assess Chrome deployment scope in your organization and verify patch version 153.0.8010.36 is available in your update channel. …

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CVE-2026-87489 vulnerability details – vuln.today

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