What is the CVSS score of EUVD-2026-74332?

EUVD-2026-74332 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.2%.

Is there a patch available for EUVD-2026-74332?

Yes, a patch is available for EUVD-2026-74332. Update the affected software to the latest version immediately.

Google Chrome EUVD-2026-74332

| CVE-2026-87577 MEDIUM

Incorrect Authorization (CWE-863)

2026-09-09 Chrome

GHSA-39rp-4mm8-xjf6

Google

4.3

CVSS 3.1 · Vendor: Chrome

Severity by source

Vendor (Chrome) PRIMARY

4.3 MEDIUM

AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

vuln.today AI

4.7 MEDIUM

S:C chosen because exploit crosses from normal web context into a distinct privileged Isolated-component page; all other metrics match the provided vector.

3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/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

Low

Integrity

None

Availability

None

Lifecycle Timeline

Metadata Corrected

Sep 09, 2026 - 18:40 vuln.today

tag: Authentication Bypass removed

Analysis Generated

Sep 09, 2026 - 18:30 vuln.today

Patch available

Sep 09, 2026 - 01:03 EUVD

CVE Published

Sep 09, 2026 - 00:09 cve.org

MEDIUM 4.3

CVE Published

Sep 09, 2026 - 00:09 cve.org

UNKNOWN (no severity yet)

DescriptionCVE.org

Incorrect authorization in Isolated in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass web origin policy into a privileged page via a crafted HTML page. (Chromium security severity: Medium)

AnalysisAI

Origin-policy bypass in Google Chrome's Isolated component (prior to 153.0.8010.36) enables unauthenticated remote attackers to cross into privileged page contexts via a crafted HTML page requiring one click from the victim. Chromium rates this Medium severity, consistent with the CVSS 4.3 score and its limited confidentiality-only impact. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation	Exploitation requires a victim running Google Chrome prior to 153.0.8010.36 to visit an attacker-controlled HTML page (UI:R mandatory). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	CVSS 4.3 (AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N) positions this as low-to-moderate risk, constrained primarily by mandatory user interaction and limited confidentiality-only impact. … 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	Vendor-released patch: Google Chrome 153.0.8010.36, distributed via the stable channel and available at https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html. … Detailed patch versions, workarounds, and compensating controls in full report.