CVE-2026-87547Network attack vector

Sandbox escape via incorrect FileSystem reference resolution

Published Sep 9, 2026 · Updated Sep 10, 2026

Incorrect reference resolution in Google Chrome FileSystem before 153.0.8010.36 allows remote attackers to execute code outside the sandbox. Google has disclosed only that FileSystem resolves a reference incorrectly; the restricted issue does not reveal the affected function or validation failure. Exploitation requires social engineering that causes a crafted HTML page to be processed, and successful exploitation escapes the browser sandbox.

CVSS severityUnavailable
Unscored
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect reference resolution in Google Chrome FileSystem before 153.0.8010.36 allows remote attackers to execute code outside the sandbox. Google has disclosed only that FileSystem resolves a reference incorrectly; the restricted issue does not reveal the affected function or validation failure. Exploitation requires social engineering that causes a crafted HTML page to be processed, and successful exploitation escapes the browser sandbox.

The record

CVE
CVE-2026-87547
Published
Sep 9, 2026
Updated
Sep 10, 2026
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-706, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=153.0.8010.36 <153.0.8010.36

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=153.0.8010.36 <153.0.8010.36

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-706Use of Incorrectly-Resolved Name or Reference
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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