CVE-2023-20575Network attack vector

Sensitive-data inference via RAPL power monitoring

Published Jul 11, 2023 · Updated Nov 27, 2024

Power side-channel exposure in AMD EPYC processors allows remote authenticated users to infer sensitive data from an AMD SEV VM. The Running Average Power Limit interface exposes power measurements that correlate with a protected guest's secret-dependent execution. Authenticated access to power reporting is required; AMD states that testing covered first-generation SEV, not SEV-ES or SEV-SNP.

CVSS severity6.5
Medium
EPSS probability0.80%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Power side-channel exposure in AMD EPYC processors allows remote authenticated users to infer sensitive data from an AMD SEV VM. The Running Average Power Limit interface exposes power measurements that correlate with a protected guest's secret-dependent execution. Authenticated access to power reporting is required; AMD states that testing covered first-generation SEV, not SEV-ES or SEV-SNP.

The record

CVE
CVE-2023-20575
Published
Jul 11, 2023
Updated
Nov 27, 2024
Vendor
AMD
Product
4th Gen AMD EPYC Processors
Classifications
CWE-203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 27, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Various

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

AMD · 4th Gen AMD EPYC Processorsversion=Various
AMD · 2nd Gen AMD EPYC Processorsversion=various
AMD · 3rd Gen AMD EPYC Processorsversion=various
AMD · 1st Gen AMD EPYC Processorsversion=various

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
6.5NISTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 11, 2026Sep 17, 2026
Latest reporting daySep 17, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-203Observable Discrepancy

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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