CVE-2026-78915Hinoki check available

Sandbox escape via Enterprise race condition

Published Aug 25, 2026 · Updated Aug 27, 2026

Race condition in Google Chrome Enterprise before 152.0.7977.65 on Windows allows attackers to execute code outside the sandbox. Google identifies the Enterprise component and race condition, but the restricted issue record leaves the shared resource and competing operations undisclosed. Exploitation requires crafted network traffic from an adjacent position and yields code execution beyond the Chrome sandbox without user interaction.

CVSS severity7.5
High
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Race condition in Google Chrome Enterprise before 152.0.7977.65 on Windows allows attackers to execute code outside the sandbox. Google identifies the Enterprise component and race condition, but the restricted issue record leaves the shared resource and competing operations undisclosed. Exploitation requires crafted network traffic from an adjacent position and yields code execution beyond the Chrome sandbox without user interaction.

The record

CVE
CVE-2026-78915
Published
Aug 25, 2026
Updated
Aug 27, 2026
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-362, T1203
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 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=152.0.7977.65 <152.0.7977.65

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=152.0.7977.65 <152.0.7977.65

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
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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