CVE-2020-0595Network attack vector

Unauthenticated privilege escalation via IPv6 use-after-free

Published Jun 15, 2020 · Updated Aug 4, 2024

IPv6 use-after-free in Intel AMT and ISM before 11.8.77, 11.12.77, 11.22.77, or 12.0.64 allows remote attackers to escalate privileges. Intel identifies the faulty subsystem but has not disclosed which IPv6 operation reuses freed memory or which network input triggers that access. Network access and no authentication are required; successful exploitation grants elevated privileges and can compromise confidentiality, integrity, and availability.

CVSS severity9.8
Critical
EPSS probability3.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

IPv6 use-after-free in Intel AMT and ISM before 11.8.77, 11.12.77, 11.22.77, or 12.0.64 allows remote attackers to escalate privileges. Intel identifies the faulty subsystem but has not disclosed which IPv6 operation reuses freed memory or which network input triggers that access. Network access and no authentication are required; successful exploitation grants elevated privileges and can compromise confidentiality, integrity, and availability.

The record

CVE
CVE-2020-0595
Published
Jun 15, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-416, T1190
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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8IntelCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1190Exploit Public-Facing Application

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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