CVE-2023-4909Network attack vector

Security UI obfuscation via crafted HTML

Published Sep 12, 2023 · Updated Feb 13, 2025

Inappropriate implementation in Google Chrome Interstitials before 117.0.5938.62 allows remote attackers to obfuscate security UI via crafted HTML. Google has not published which interstitial code path mishandles the crafted HTML or how it obscures the security UI. A user must open the attacker-controlled page; the reported consequence is misleading browser security UI, not code execution or data access.

CVSS severity4.3
Medium
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Inappropriate implementation in Google Chrome Interstitials before 117.0.5938.62 allows remote attackers to obfuscate security UI via crafted HTML. Google has not published which interstitial code path mishandles the crafted HTML or how it obscures the security UI. A user must open the attacker-controlled page; the reported consequence is misleading browser security UI, not code execution or data access.

The record

CVE
CVE-2023-4909
Published
Sep 12, 2023
Updated
Feb 13, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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=117.0.5938.62 <117.0.5938.62

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=117.0.5938.62 <117.0.5938.62

Published CVSS scores

4.3NIST NVDCVSS: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

No sourced classifications are available.

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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