CVE-2026-19138Network attack vector

Sandbox escape via CrashReporting heap overflow

Published Aug 6, 2026 · Updated Aug 6, 2026

Heap buffer overflow in CrashReporting in Google Chrome before 151.0.7922.109 allows remote attackers to escape the sandbox via crafted HTML. The component performs an out-of-bounds heap access, but Google has not disclosed the affected function or faulty bounds operation. Exploitation requires interaction with the page and prior compromise of the renderer process, after which Chrome's sandbox trust boundary can be crossed.

CVSS severity8.3
High
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in CrashReporting in Google Chrome before 151.0.7922.109 allows remote attackers to escape the sandbox via crafted HTML. The component performs an out-of-bounds heap access, but Google has not disclosed the affected function or faulty bounds operation. Exploitation requires interaction with the page and prior compromise of the renderer process, after which Chrome's sandbox trust boundary can be crossed.

The record

CVE
CVE-2026-19138
Published
Aug 6, 2026
Updated
Aug 6, 2026
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-122, T1211
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 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=151.0.7922.109 <151.0.7922.109

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=151.0.7922.109 <151.0.7922.109

Published CVSS scores

8.3CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
T1211Exploitation for Defense Evasion

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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