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Google Chrome CVE-2026-87534

| EUVDEUVD-2026-74354 CRITICAL
Missing Authorization (CWE-862)
2026-09-09 Chrome GHSA-g6hr-2p9x-w7p3
9.8
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
5.4 MEDIUM

Description requires social engineering so UI:R (not UI:N); Chromium's Medium rating and 'bypass restrictions' impact imply partial C/I, no availability effect.

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

Primary rating from NVD.

CVSS VectorNVD

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

Lifecycle Timeline

7
Metadata Corrected
Sep 10, 2026 - 18:40 vuln.today
tag: Android added
Metadata Corrected
Sep 10, 2026 - 18:40 vuln.today
tag: Authentication Bypass removed
Analysis Generated
Sep 10, 2026 - 18:38 vuln.today
CVSS changed
Sep 10, 2026 - 18:37 NVD
9.8 (CRITICAL)
Patch available
Sep 09, 2026 - 01:03 EUVD
CVE Published
Sep 09, 2026 - 00:09 cve.org
UNKNOWN (no severity yet)
CVE Published
Sep 09, 2026 - 00:09 nvd
CRITICAL 9.8

DescriptionNVD

Missing authorization in WebView in Google Chrome on on Android prior to 153.0.8010.36 allowed a remote attacker leveraging social engineering to bypass system access restrictions via crafted network traffic. (Chromium security severity: Medium)

AnalysisAI

Missing authorization in the WebView component of Google Chrome on Android before 153.0.8010.36 lets a remote attacker who first tricks a user via social engineering bypass system access restrictions through crafted network traffic. The flaw is tracked as CWE-862 (missing authorization) and was reported by Google's Chrome team; a vendor patch is available. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Exploit
technique details hidden
Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires the target to run Google Chrome on Android older than 153.0.8010.36 and, per the description, requires the attacker to leverage social engineering to induce a user action - so it is NOT a silent, no-interaction remote compromise despite the NVD UI:N metric. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The signals conflict sharply. … 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: update Google Chrome on Android to 153.0.8010.36 or later. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, identify and inventory all Android devices running Google Chrome in your organization and alert users to the availability of a security patch. …

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CVE-2026-87534 vulnerability details – vuln.today

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