CVE-2020-24491

Privileged address disclosure via SGX debug messages

Published Feb 17, 2021 · Updated Aug 4, 2024

Information disclosure in Intel 10th Generation Core processors supporting SGX allows local users to read memory-transaction addresses. The disclosed mechanism is a debug message that includes memory-transaction addresses instead of withholding them from diagnostic output. Exploitation requires privileged local access and user interaction, and the documented consequence is limited to confidentiality loss.

CVSS severity4.0
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Intel 10th Generation Core processors supporting SGX allows local users to read memory-transaction addresses. The disclosed mechanism is a debug message that includes memory-transaction addresses instead of withholding them from diagnostic output. Exploitation requires privileged local access and user interaction, and the documented consequence is limited to confidentiality loss.

The record

CVE
CVE-2020-24491
Published
Feb 17, 2021
Updated
Aug 4, 2024
Vendor
Intel Corporation
Product
10th Generation Intel Core Processors
Classifications
CWE-20
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 17, 2021CVE 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 references

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Intel Corporation · 10th Generation Intel Core Processorsversion=See references

Published CVSS scores

4.4NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
1.9NIST NVDAV:L/AC:M/Au:N/C:P/I:N/A:N
4.0Intel CorporationCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N

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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation

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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