CVE-2023-21775Network attack vector

Remote code execution

Published Jan 23, 2023 · Updated Jan 1, 2025

Remote code execution in Microsoft Edge (Chromium-based) before 109.0.1518.49 allows remote attackers to run code through crafted content. Microsoft has not published the affected component or the operation that mishandles the content. Exploitation requires user interaction and high-complexity conditions; success compromises the browser process's confidentiality, integrity, and availability.

CVSS severity8.3
High
EPSS probability0.99%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Remote code execution in Microsoft Edge (Chromium-based) before 109.0.1518.49 allows remote attackers to run code through crafted content. Microsoft has not published the affected component or the operation that mishandles the content. Exploitation requires user interaction and high-complexity conditions; success compromises the browser process's confidentiality, integrity, and availability.

The record

CVE
CVE-2023-21775
Published
Jan 23, 2023
Updated
Jan 1, 2025
Vendor
Microsoft
Product
Microsoft Edge (Chromium-based)
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 1, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0 <108.0.1462.83
  2. Affected versionversion=1.0.0 <109.0.1518.49

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft Edge (Chromium-based)version=1.0.0 <108.0.1462.83; version=1.0.0 <109.0.1518.49

Published CVSS scores

8.3Microsoft CorporationCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/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 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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