CVE-2023-36559Network attack vector

Browser content spoofing

Published Oct 13, 2023 · Updated Apr 14, 2025

Spoofing in Microsoft Edge (Chromium-based) before 118.0.2088.46 allows remote attackers to misrepresent browser content. Microsoft has not disclosed the affected browser UI locus or the operation that mishandles untrusted content. Exploitation requires a user to open specially crafted web content; successful spoofing can expose or alter limited information but does not interrupt service.

CVSS severity4.2
Medium
EPSS probability0.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Spoofing in Microsoft Edge (Chromium-based) before 118.0.2088.46 allows remote attackers to misrepresent browser content. Microsoft has not disclosed the affected browser UI locus or the operation that mishandles untrusted content. Exploitation requires a user to open specially crafted web content; successful spoofing can expose or alter limited information but does not interrupt service.

The record

CVE
CVE-2023-36559
Published
Oct 13, 2023
Updated
Apr 14, 2025
Vendor
Microsoft
Product
Microsoft Edge (Chromium-based)
Classifications
T1036
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 14, 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=1.0.0 <118.0.2088.46

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft Edge (Chromium-based)version=1.0.0 <118.0.2088.46

Published CVSS scores

4.2Microsoft CorporationCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/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 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

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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