How severe is CVE-2023-20556?

CVE-2023-20556 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-20556 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-20556?

CVE-2023-20556 affects Amd Amd Uprof. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-20556?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-20556 published?

CVE-2023-20556 was published on 2023-08-08 and last updated on 2026-06-17.

CVE-2023-20556

CVE-2023-20556 is a medium-severity vulnerability in Amd Amd Uprof with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Amd Amd Uprof
Published: 2023-08-08
Last modified: 2026-06-17

Description

Insufficient validation of the IOCTL (Input Output Control) input buffer in AMD μProf may allow an authenticated user to send an arbitrary buffer potentially resulting in a Windows crash leading to denial of service.

Frequently asked questions

What is CVE-2023-20556?: Insufficient validation of the IOCTL (Input Output Control) input buffer in AMD μProf may allow an authenticated user to send an arbitrary buffer potentially resulting in a Windows crash leading to denial of service.
How severe is CVE-2023-20556?: CVE-2023-20556 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-20556 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-20556?: CVE-2023-20556 affects Amd Amd Uprof. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-20556?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-20556 published?: CVE-2023-20556 was published on 2023-08-08 and last updated on 2026-06-17.

References

https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-7003

Affected products (1)

cpe:2.3:a:amd:amd_uprof:*:*:*:*:*:*:*:*

More vulnerabilities in Amd Amd Uprof

CVE-2021-26334 — Critical (CVSS 9.9): The AMDPowerProfiler.sys driver of AMD μProf tool may allow lower privileged users to access MSRs in kernel which may…
CVE-2023-20562 — High (CVSS 7.8): Insufficient validation in the IOCTL (Input Output Control) input buffer in AMD uProf may allow an authenticated user…
CVE-2022-27674 — High (CVSS 7.5): Insufficient validation in the IOCTL input/output buffer in AMD μProf may allow an attacker to bypass bounds checks…
CVE-2022-23831 — High (CVSS 7.5): Insufficient validation of the IOCTL input buffer in AMD μProf may allow an attacker to send an arbitrary buffer…
CVE-2023-20561 — Medium (CVSS 5.5): Insufficient validation of the IOCTL (Input Output Control) input buffer in AMD μProf may allow an authenticated user…

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