CVE-2025-13042Network attack vector

Heap corruption via undisclosed V8 implementation flaw

Published Nov 12, 2025 · Updated Nov 12, 2025

Heap corruption in V8 in Google Chrome before 142.0.7444.166 allows remote attackers to corrupt browser memory via crafted HTML. Google has not disclosed the affected V8 code path or the incorrect operation that permits the corruption. A user must load attacker-controlled HTML, and the public record establishes heap corruption but does not specify a resulting crash, code execution, or sandbox escape.

CVSS severityUnavailable
Unscored
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap corruption in V8 in Google Chrome before 142.0.7444.166 allows remote attackers to corrupt browser memory via crafted HTML. Google has not disclosed the affected V8 code path or the incorrect operation that permits the corruption. A user must load attacker-controlled HTML, and the public record establishes heap corruption but does not specify a resulting crash, code execution, or sandbox escape.

The record

CVE
CVE-2025-13042
Published
Nov 12, 2025
Updated
Nov 12, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 12, 2025Record 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=142.0.7444.166 <142.0.7444.166

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=142.0.7444.166 <142.0.7444.166

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.

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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

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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