CVE-2021-36930

Local privilege escalation

Published Sep 2, 2021 · Updated Aug 10, 2026

Microsoft Edge (Chromium-based) before 93.0.961.38 allows local users to gain privileges through an elevation-of-privilege flaw. The public record does not disclose the vulnerable component or the incorrect operation on untrusted input. Exploitation requires local access and user interaction, and the reported consequence is increased confidentiality, integrity, and availability impact within the affected browser context.

CVSS severity8.1
High
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Microsoft Edge (Chromium-based) before 93.0.961.38 allows local users to gain privileges through an elevation-of-privilege flaw. The public record does not disclose the vulnerable component or the incorrect operation on untrusted input. Exploitation requires local access and user interaction, and the reported consequence is increased confidentiality, integrity, and availability impact within the affected browser context.

The record

CVE
CVE-2021-36930
Published
Sep 2, 2021
Updated
Aug 10, 2026
Vendor
Microsoft
Product
Microsoft Edge (Chromium-based)
Classifications
CWE-269, T1068
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 2, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record 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=1.0.0.0 <93.0.961.38

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft Edge (Chromium-based)version=1.0.0.0 <93.0.961.38

Published CVSS scores

5.3MicrosoftCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C
5.3MicrosoftCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
6.8NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
8.1NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/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)
Vectorlocal
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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