CVE-2022-23823Public exploitNetwork attack vector

Authenticated secret disclosure via data-dependent frequency scaling

Published Jun 15, 2022 · Updated Sep 17, 2024

Information disclosure in AMD processors using frequency scaling allows remote authenticated users to infer secrets through response timing. Dynamic frequency scaling makes CPU frequency depend on processed data, converting secret-dependent power variation into measurable execution-time differences. Exploitation requires repeated chosen inputs to a cryptographic workload and permits recovery of exposed secrets, including demonstrated SIKE keys, without integrity or availability impact.

CVSS severity6.5
Medium
EPSS probability1.17%
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 AMD processors using frequency scaling allows remote authenticated users to infer secrets through response timing. Dynamic frequency scaling makes CPU frequency depend on processed data, converting secret-dependent power variation into measurable execution-time differences. Exploitation requires repeated chosen inputs to a cryptographic workload and permits recovery of exposed secrets, including demonstrated SIKE keys, without integrity or availability impact.

The record

CVE
CVE-2022-23823
Published
Jun 15, 2022
Updated
Sep 17, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
4.0NIST NVDAV:N/AC:L/Au:S/C:P/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-203Observable Discrepancy

Public exploit references

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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