CVE-2021-33068Network attack vector

Authenticated service interruption via null pointer dereference

Published Feb 9, 2022 · Updated May 5, 2025

A null pointer dereference in Intel Active Management Technology before 15.0.35 allows remote authenticated users to interrupt its service. Intel identifies only an unspecified AMT subsystem; it has not published the request or operation that dereferences the null pointer. Network access and AMT authentication are required, and the documented consequence is limited to reduced availability rather than data access or modification.

CVSS severity5.0
Medium
EPSS probability0.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A null pointer dereference in Intel Active Management Technology before 15.0.35 allows remote authenticated users to interrupt its service. Intel identifies only an unspecified AMT subsystem; it has not published the request or operation that dereferences the null pointer. Network access and AMT authentication are required, and the documented consequence is limited to reduced availability rather than data access or modification.

The record

CVE
CVE-2021-33068
Published
Feb 9, 2022
Updated
May 5, 2025
Vendor
Topcon Positioning Systems, Inc.
Product
Intel Active Management Technology (Intel AMT)
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 9, 2022CVE publishedPublication date reported by the CVE source.
  2. May 5, 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=before versions 15.0.35

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Topcon Positioning Systems, Inc. · Intel Active Management Technology (Intel AMT)version=before versions 15.0.35

Published CVSS scores

5.0Intel CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L
6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.0NIST NVDAV:N/AC:L/Au:S/C:N/I:N/A:P

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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