CVE-2021-33162

Authenticated local privilege escalation

Published May 16, 2024 · Updated Aug 3, 2024

Improper access control in Intel Ethernet Adapters before 29.0.1 and I225 firmware before 1.87 allows local users to escalate privileges. Intel has not published the affected firmware locus or the access-control operation performed incorrectly. Exploitation requires authenticated local access and grants higher privileges on host components outside the firmware's original security scope.

CVSS severity8.4
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Intel Ethernet Adapters before 29.0.1 and I225 firmware before 1.87 allows local users to escalate privileges. Intel has not published the affected firmware locus or the access-control operation performed incorrectly. Exploitation requires authenticated local access and grants higher privileges on host components outside the firmware's original security scope.

The record

CVE
CVE-2021-33162
Published
May 16, 2024
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-284, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.4Intel CorporationCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
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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