CVE-2025-12911Network attack vector

UI spoofing via crafted HTML page

Published Nov 7, 2025 · Updated Nov 7, 2025

UI spoofing in Google Chrome before 140.0.7339.80 allows remote attackers to misrepresent browser permissions via a crafted HTML page. Google identifies the Permissions component but has not publicly disclosed the faulty operation within its permission-interface handling. A user must open the crafted page; the documented consequence is limited to falsifying security-relevant interface information.

CVSS severity4.3
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

UI spoofing in Google Chrome before 140.0.7339.80 allows remote attackers to misrepresent browser permissions via a crafted HTML page. Google identifies the Permissions component but has not publicly disclosed the faulty operation within its permission-interface handling. A user must open the crafted page; the documented consequence is limited to falsifying security-relevant interface information.

The record

CVE
CVE-2025-12911
Published
Nov 7, 2025
Updated
Nov 7, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-451, T1036
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 7, 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=140.0.7339.80 <140.0.7339.80

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=140.0.7339.80 <140.0.7339.80

Published CVSS scores

4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-451User Interface (UI) Misrepresentation of Critical Information
T1036Masquerading

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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