CVE-2025-10585Known exploitationNetwork attack vector

Heap corruption via V8 type confusion

Published Sep 24, 2025 · Updated Sep 24, 2025

Type confusion in V8 in Google Chrome before 140.0.7339.185 allows remote attackers to corrupt heap memory via a crafted HTML page. Google has not disclosed the specific V8 code path or incorrect type operation because the underlying issue details remain restricted. Exploitation requires Chrome to process attacker-controlled page content; Google confirms exploitation in the wild but has not described any sandbox escape.

CVSS severity9.8
Critical
EPSS probability5.39%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Type confusion in V8 in Google Chrome before 140.0.7339.185 allows remote attackers to corrupt heap memory via a crafted HTML page. Google has not disclosed the specific V8 code path or incorrect type operation because the underlying issue details remain restricted. Exploitation requires Chrome to process attacker-controlled page content; Google confirms exploitation in the wild but has not described any sandbox escape.

The record

CVE
CVE-2025-10585
Published
Sep 24, 2025
Updated
Sep 24, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 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=140.0.7339.185 <140.0.7339.185

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=140.0.7339.185 <140.0.7339.185

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
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.

Reported exploitation

Technologies

Your stack

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Your stack

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