CVE-2020-0538Network attack vector

Unauthenticated service interruption via improper input validation

Published Jun 15, 2020 · Updated Aug 4, 2024

Improper input validation in Intel AMT before 11.8.77, 11.12.77, 11.22.77, and 12.0.64 allows remote attackers to interrupt service. The affected firmware subsystem and the network input it validates incorrectly have not been publicly disclosed by Intel. Network access requires no authentication or user interaction; Intel has not specified whether the interruption is a hang, crash, or reboot.

CVSS severity7.5
High
EPSS probability2.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Intel AMT before 11.8.77, 11.12.77, 11.22.77, and 12.0.64 allows remote attackers to interrupt service. The affected firmware subsystem and the network input it validates incorrectly have not been publicly disclosed by Intel. Network access requires no authentication or user interaction; Intel has not specified whether the interruption is a hang, crash, or reboot.

The record

CVE
CVE-2020-0538
Published
Jun 15, 2020
Updated
Aug 4, 2024
Vendor
Topcon Positioning Systems, Inc.
Product
Intel Active Management Technology (Intel AMT)
Classifications
CWE-20, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 15, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

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  1. Affected versionversion=See provided reference

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Topcon Positioning Systems, Inc. · Intel Active Management Technology (Intel AMT)version=See provided reference

Published CVSS scores

7.5Intel CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0NIST National Vulnerability DatabaseAV:N/AC:L/Au:N/C:N/I:N/A:P
7.5NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.

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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-20Improper Input Validation
T1499Endpoint Denial of Service

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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