CVE-2023-35618Network attack vector

Privilege escalation via undisclosed use-after-free

Published Dec 7, 2023 · Updated Jan 1, 2025

Use-after-free in Microsoft Edge (Chromium-based) before 120.0.2210.61 allows remote attackers to elevate privileges after user interaction. Microsoft has not disclosed the affected component or how attacker-controlled browser content causes freed memory to be reused. A user must open attacker-controlled content, and successful exploitation crosses a browser security boundary to grant elevated privileges.

CVSS severity9.6
Critical
EPSS probability2.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Microsoft Edge (Chromium-based) before 120.0.2210.61 allows remote attackers to elevate privileges after user interaction. Microsoft has not disclosed the affected component or how attacker-controlled browser content causes freed memory to be reused. A user must open attacker-controlled content, and successful exploitation crosses a browser security boundary to grant elevated privileges.

The record

CVE
CVE-2023-35618
Published
Dec 7, 2023
Updated
Jan 1, 2025
Vendor
Microsoft
Product
Microsoft Edge (Chromium-based)
Classifications
CWE-416, T1068, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 7, 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

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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 <120.0.2210.61

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft Edge (Chromium-based)version=1.0.0 <120.0.2210.61

Published CVSS scores

9.6Microsoft CorporationCVSS:3.1/AV:N/AC:L/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

CWE-416Use After Free
T1068Exploitation for Privilege Escalation
T1203Exploitation for Client Execution

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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