CVE-2026-9953Network attack vector

Process-memory disclosure via misprepared Vulkan line-loop draws

Published May 28, 2026 · Updated May 28, 2026

Out-of-bounds read in ANGLE in Google Chrome before 148.0.7778.216 allows remote attackers to read process memory via crafted HTML. ANGLE's Vulkan setupLineLoopDraw path omitted the base instance and instance count when preparing line-loop draw state, causing instanced vertex data to be addressed beyond its valid range. A user must load the crafted page; the read exposes potentially sensitive browser-process data without reported write or execution capability.

CVSS severity6.5
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in ANGLE in Google Chrome before 148.0.7778.216 allows remote attackers to read process memory via crafted HTML. ANGLE's Vulkan setupLineLoopDraw path omitted the base instance and instance count when preparing line-loop draw state, causing instanced vertex data to be addressed beyond its valid range. A user must load the crafted page; the read exposes potentially sensitive browser-process data without reported write or execution capability.

The record

CVE
CVE-2026-9953
Published
May 28, 2026
Updated
May 28, 2026
Vendor
Go standard library
Product
Google Chrome
Classifications
CWE-125
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 28, 2026CVE publishedPublication date reported by the CVE source.
  2. May 28, 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=148.0.7778.216 <148.0.7778.216

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Go standard library · Google Chromeversion=148.0.7778.216 <148.0.7778.216

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

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-125Out-of-bounds Read

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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