CVE-2026-93377Network attack vectorHinoki check available

Sandboxed code execution via V8 type confusion

Published Sep 17, 2026 · Updated Sep 17, 2026

Type confusion in V8 in Google Chrome before 153.0.8010.52 allows remote attackers to execute code inside the sandbox via crafted HTML. The specific V8 operation that misinterprets an object is undisclosed, and the linked Chromium bug requires sign-in. Exploitation requires the target to load an attacker-controlled page; the reported code execution remains inside the browser sandbox.

CVSS severity8.8
High
EPSS probability0.44%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Type confusion in V8 in Google Chrome before 153.0.8010.52 allows remote attackers to execute code inside the sandbox via crafted HTML. The specific V8 operation that misinterprets an object is undisclosed, and the linked Chromium bug requires sign-in. Exploitation requires the target to load an attacker-controlled page; the reported code execution remains inside the browser sandbox.

The record

CVE
CVE-2026-93377
Published
Sep 17, 2026
Updated
Sep 17, 2026
Vendor
WebM Project
Product
Chrome
Classifications
CWE-843, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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 version<153.0.8010.52

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WebM Project · Chrome<153.0.8010.52

Published CVSS scores

8.8CISA ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-843Access of Resource Using Incompatible Type ('Type Confusion')
T1189Drive-by Compromise

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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