CVE-2023-38187Network attack vector

Privilege elevation through undisclosed browser flaw

Published Jul 21, 2023 · Updated Feb 28, 2025

Improper privilege management in Microsoft Edge (Chromium-based) before 115.0.1901.183 allows remote attackers to elevate privileges. Microsoft has not published the affected code locus or the incorrect operation performed on untrusted input. Exploitation requires no authentication or user interaction but has high complexity; successful attacks gain elevated privileges, while the resulting privilege boundary remains undisclosed.

CVSS severity6.5
Medium
EPSS probability0.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper privilege management in Microsoft Edge (Chromium-based) before 115.0.1901.183 allows remote attackers to elevate privileges. Microsoft has not published the affected code locus or the incorrect operation performed on untrusted input. Exploitation requires no authentication or user interaction but has high complexity; successful attacks gain elevated privileges, while the resulting privilege boundary remains undisclosed.

The record

CVE
CVE-2023-38187
Published
Jul 21, 2023
Updated
Feb 28, 2025
Vendor
Microsoft
Product
Microsoft Edge (Chromium-based)
Classifications
CWE-269, T1068
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 28, 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 <115.0.1901.183

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft Edge (Chromium-based)version=1.0.0 <115.0.1901.183

Published CVSS scores

6.5Microsoft CorporationCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/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

CWE-269Improper Privilege Management
T1068Exploitation for Privilege Escalation

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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