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TI-2023-07006 Aliases CVE-2023-20540GHSA-q66m-cmxr-cpcf

An observable timing discrepancy in the ASP could allow a privileged attacker to perform…

Priority LOW 9CWE-208Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
High
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-208.

Summary

An observable timing discrepancy in the ASP could allow a privileged attacker to perform a brute-force attack against the hash message authentication code, allowing arbitrary message input, potentially leading to a loss of data integrity.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00153 4th percentileScored 2026-11-07
Fix Fixed AMD Ryzen™ 3000 Series Desktop Processors (AMD): ComboAM4 1.0.0.E, ComboAM4v2PI 1.2.0.CAAMD Ryzen™ 5000 Series Desktop Processors (AMD): ComboAM4v2PI 1.2.0.CA+3 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AMDAMD Ryzen™ 3000 Series Desktop Processors—ComboAM4 1.0.0.E, ComboAM4v2PI 1.2.0.CAPatch availableCNA
AMDAMD Ryzen™ 5000 Series Desktop Processors—ComboAM4v2PI 1.2.0.CAPatch availableCNA
AMDAMD Ryzen™ Threadripper™ 3000 Series Processors—CastlePeakPI-SP3r3 1.0.0.CPatch availableCNA
AMDAMD Ryzen™ Threadripper™ PRO 3000WX Series Processors—CastlePeakWSPI-sWRX8 1.0.0.EPatch availableCNA
AMDAMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors—ChagallWSPI-sWRX8 1.0.0.9Patch availableCNA
  • AMD Ryzen™ 3000 Series Desktop Processors VendorAMD Affected — Fixed in ComboAM4 1.0.0.E, ComboAM4v2PI 1.2.0.CA Patch available CNA
  • AMD Ryzen™ 5000 Series Desktop Processors VendorAMD Affected — Fixed in ComboAM4v2PI 1.2.0.CA Patch available CNA
  • AMD Ryzen™ Threadripper™ 3000 Series Processors VendorAMD Affected — Fixed in CastlePeakPI-SP3r3 1.0.0.C Patch available CNA
  • AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors VendorAMD Affected — Fixed in CastlePeakWSPI-sWRX8 1.0.0.E Patch available CNA
  • AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors VendorAMD Affected — Fixed in ChagallWSPI-sWRX8 1.0.0.9 Patch available CNA

Remediation

  • Fix · CNA AMD Ryzen™ 3000 Series Desktop Processors (AMD) Fixed in ComboAM4 1.0.0.E, ComboAM4v2PI 1.2.0.CA
  • Fix · CNA AMD Ryzen™ 5000 Series Desktop Processors (AMD) Fixed in ComboAM4v2PI 1.2.0.CA
  • Fix · CNA AMD Ryzen™ Threadripper™ 3000 Series Processors (AMD) Fixed in CastlePeakPI-SP3r3 1.0.0.C
  • Fix · CNA AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors (AMD) Fixed in CastlePeakWSPI-sWRX8 1.0.0.E
  • Fix · CNA AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors (AMD) Fixed in ChagallWSPI-sWRX8 1.0.0.9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-20540
  2. 2026-10-03 Alias added: GHSA-q66m-cmxr-cpcf

References

Other 1

  • TI-2026-36341 AI Tensor Engine for ROCm (AITER) 0.1.14 Unauthenticated RCE via MessageQueue.recv() Pickle Deserialization CVSS 4.0CRITICAL 9.2
  • TI-2023-07046 Improper privilege management in AMD Radeon™ RX 5000 Series Graphics Cards CVSS 3.1HIGH 7.8
  • TI-2023-04574 GPU kernel implementations susceptible to memory leak CVSS 3.1MEDIUM 6.5
  • TI-2023-07042 Information disclosure through error messages in AMD Ryzen™ 3000 Series Desktop… CVSS 3.1MEDIUM 5.5
  • TI-2023-23747 PVRIC (PowerVR Image Compression) on Imagination 2018 and later GPU devices offers… CVSS 3.1MEDIUM 5.3
  • TI-2022-07839 Improper access control in System Management Mode (SMM) may allow an attacker to write to… CVSS 3.1CRITICAL 9.8
See all 508 →

Sources

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