CVE-2023-20561

Authenticated Windows crash via arbitrary IOCTL address

Published Aug 8, 2023 · Updated Oct 10, 2024

Improper input validation in AMD uProf before 4.1.396 allows local users to crash Windows through a crafted IOCTL request. The IOCTL input-buffer handler accepts an attacker-supplied address without sufficient validation and passes it into driver processing. A local authenticated account that can reach the uProf driver is required, and the documented consequence is a Windows system crash rather than data access or code execution.

CVSS severity5.5
Medium
EPSS probability0.27%
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 AMD uProf before 4.1.396 allows local users to crash Windows through a crafted IOCTL request. The IOCTL input-buffer handler accepts an attacker-supplied address without sufficient validation and passes it into driver processing. A local authenticated account that can reach the uProf driver is required, and the documented consequence is a Windows system crash rather than data access or code execution.

The record

CVE
CVE-2023-20561
Published
Aug 8, 2023
Updated
Oct 10, 2024
Vendor
Advanced Micro Devices, Inc.
Product
AMD uProf
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 10, 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 <4.1.396
  2. Affected versionversion=various <4.1-424

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Advanced Micro Devices, Inc. · AMD uProfversion=various <4.1.396; version=various <4.1-424

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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