Incorrect authorization in AMD EPYC™ 7001 Series Processors
Priority LOW 17CWE-863Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-863.
Summary
Insufficient access controls in ASP kernel may allow a privileged attacker with access to AMD signing keys and the BIOS menu or UEFI shell to map DRAM regions in protected areas, potentially leading to a loss of platform integrity.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00146 3rd percentileScored 2026-11-07
Fix Fixed AMD Ryzen™ 3000 Series Desktop Processors (AMD): ComboAM4PI 1.0.0.9, ComboAM4 V2 PI 1.2.0.8AMD Ryzen™ 5000 Series Desktop Processors (AMD): ComboAM4 V2 PI 1.2.0.8+21 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| AMD | AMD EPYC™ 7001 Series Processors | various and later | — | No fix listed | CNA |
| AMD | AMD EPYC™ 7002 Series Processors | various and later | — | No fix listed | CNA |
| AMD | AMD EPYC™ 7003 Series Processors | various and later | — | No fix listed | CNA |
| AMD | AMD EPYC™ 9004 Series Processors | various and later | — | No fix listed | CNA |
| AMD | AMD Ryzen™ 3000 Series Desktop Processors | — | ComboAM4PI 1.0.0.9, ComboAM4 V2 PI 1.2.0.8 | Patch available | CNA |
| AMD | AMD Ryzen™ 5000 Series Desktop Processors | — | ComboAM4 V2 PI 1.2.0.8 | Patch available | CNA |
| AMD | AMD Ryzen™ 5000 Series Desktop Processor with Radeon™ Graphics | — | ComboAM4v2 PI 1.2.0.6 | Patch available | CNA |
| AMD | AMD Ryzen™ 7000 Series Desktop Processors | — | ComboAM5 1.0.8.0 | Patch available | CNA |
| AMD | AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics | — | ComboAM4PI 1.0.0.9, ComboAM4v2 PI 1.2.0.8 | Patch available | CNA |
| AMD | AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphics | — | ComboAM4v2 PI 1.2.0.5 | Patch available | CNA |
| AMD | AMD Ryzen™ Threadripper™ 3000 Series Processors | — | CastlePeakPI-SP3r3 1.0.0.7 | Patch available | CNA |
| AMD | AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors | — | ChagallWSPI-sWRX8 1.0.0.2, CastlePeakWSPI-sWRX8 1.0.0.9 | Patch available | CNA |
| AMD | AMD Ryzen™ Threadripper™ PRO 5000WX Processors | — | ChagallWSPI-sWRX8 1.0.0.2 | Patch available | CNA |
| AMD | AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics | — | PicassoPI-FP5 1.0.0.E | Patch available | CNA |
| AMD | AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics | — | PollockPI-FT5 1.0.0.4 | Patch available | CNA |
| AMD | AMD Ryzen™ 3000 Series Mobile Processor with Radeon™ Graphics | — | PicassoPI-FP5 1.0.0.E | Patch available | CNA |
| AMD | AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics | — | RenoirPI-FP6 1.0.0.8 | Patch available | CNA |
| AMD | AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics | — | CezannePI-FP6 1.0.0.9 | Patch available | CNA |
| AMD | AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics | — | CezannePI-FP6 1.0.0.9 | Patch available | CNA |
| AMD | AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics | — | RembrandtPI-FP7 1.0.0.9b | Patch available | CNA |
| AMD | AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics | — | RembrandtPI-FP7 1.0.0.9b | Patch available | CNA |
| AMD | AMD Ryzen™ 5000 Series Processors with Radeon™ Graphics | — | CezannePI-FP6 1.0.0.9 | Patch available | CNA |
| AMD | AMD Ryzen™ 3000 Series Processors with Radeon™ Graphics | — | CezannePI-FP6 1.0.0.9 | Patch available | CNA |
| AMD | AMD EPYC™ Embedded 3000 Series Processors | various and later | — | No fix listed | CNA |
| AMD | AMD EPYC™ Embedded 7002 Series Processors | various and later | — | No fix listed | CNA |
| AMD | AMD EPYC™ Embedded 7003 Series Processors | various and later | — | No fix listed | CNA |
| AMD | AMD EPYC™ Embedded 9003 Series Processors | various and later | — | No fix listed | CNA |
| AMD | AMD Ryzen™ Embedded R1000 Series Processors | — | EmbeddedPI-FP5 1.2.0.A | Patch available | CNA |
| AMD | AMD Ryzen™ Embedded R2000 Series Processors | — | EmbeddedR2KPI-FP5 1.0.0.2 | Patch available | CNA |
| AMD | AMD Ryzen™ Embedded 5000 Series Processors | — | EmbAM4PI 1.0.0.2 | Patch available | CNA |
| AMD | AMD Ryzen™ Embedded V1000 Series Processors | — | EmbeddedPI-FP5 1.2.0.A | Patch available | CNA |
| AMD | AMD Ryzen™ Embedded V2000 Series Processors | — | EmbeddedPI-FP6 1.0.0.6 | Patch available | CNA |
| AMD | AMD Ryzen™ Embedded V3000 Series Processors | — | EmbeddedPI-FP7r2 1.0.0.9 | Patch available | CNA |
- AMD EPYC™ 7001 Series Processors VendorAMD Affected various and later Fixed in — No fix listed CNA
- AMD EPYC™ 7002 Series Processors VendorAMD Affected various and later Fixed in — No fix listed CNA
- AMD EPYC™ 7003 Series Processors VendorAMD Affected various and later Fixed in — No fix listed CNA
- AMD EPYC™ 9004 Series Processors VendorAMD Affected various and later Fixed in — No fix listed CNA
- AMD Ryzen™ 3000 Series Desktop Processors VendorAMD Affected — Fixed in ComboAM4PI 1.0.0.9, ComboAM4 V2 PI 1.2.0.8 Patch available CNA
- AMD Ryzen™ 5000 Series Desktop Processors VendorAMD Affected — Fixed in ComboAM4 V2 PI 1.2.0.8 Patch available CNA
- AMD Ryzen™ 5000 Series Desktop Processor with Radeon™ Graphics VendorAMD Affected — Fixed in ComboAM4v2 PI 1.2.0.6 Patch available CNA
- AMD Ryzen™ 7000 Series Desktop Processors VendorAMD Affected — Fixed in ComboAM5 1.0.8.0 Patch available CNA
- AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics VendorAMD Affected — Fixed in ComboAM4PI 1.0.0.9, ComboAM4v2 PI 1.2.0.8 Patch available CNA
- AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphics VendorAMD Affected — Fixed in ComboAM4v2 PI 1.2.0.5 Patch available CNA
- AMD Ryzen™ Threadripper™ 3000 Series Processors VendorAMD Affected — Fixed in CastlePeakPI-SP3r3 1.0.0.7 Patch available CNA
- AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors VendorAMD Affected — Fixed in ChagallWSPI-sWRX8 1.0.0.2, CastlePeakWSPI-sWRX8 1.0.0.9 Patch available CNA
- AMD Ryzen™ Threadripper™ PRO 5000WX Processors VendorAMD Affected — Fixed in ChagallWSPI-sWRX8 1.0.0.2 Patch available CNA
- AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics VendorAMD Affected — Fixed in PicassoPI-FP5 1.0.0.E Patch available CNA
- AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics VendorAMD Affected — Fixed in PollockPI-FT5 1.0.0.4 Patch available CNA
- AMD Ryzen™ 3000 Series Mobile Processor with Radeon™ Graphics VendorAMD Affected — Fixed in PicassoPI-FP5 1.0.0.E Patch available CNA
- AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics VendorAMD Affected — Fixed in RenoirPI-FP6 1.0.0.8 Patch available CNA
- AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics VendorAMD Affected — Fixed in CezannePI-FP6 1.0.0.9 Patch available CNA
- AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics VendorAMD Affected — Fixed in CezannePI-FP6 1.0.0.9 Patch available CNA
- AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics VendorAMD Affected — Fixed in RembrandtPI-FP7 1.0.0.9b Patch available CNA
- AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics VendorAMD Affected — Fixed in RembrandtPI-FP7 1.0.0.9b Patch available CNA
- AMD Ryzen™ 5000 Series Processors with Radeon™ Graphics VendorAMD Affected — Fixed in CezannePI-FP6 1.0.0.9 Patch available CNA
- AMD Ryzen™ 3000 Series Processors with Radeon™ Graphics VendorAMD Affected — Fixed in CezannePI-FP6 1.0.0.9 Patch available CNA
- AMD EPYC™ Embedded 3000 Series Processors VendorAMD Affected various and later Fixed in — No fix listed CNA
- AMD EPYC™ Embedded 7002 Series Processors VendorAMD Affected various and later Fixed in — No fix listed CNA
- AMD EPYC™ Embedded 7003 Series Processors VendorAMD Affected various and later Fixed in — No fix listed CNA
- AMD EPYC™ Embedded 9003 Series Processors VendorAMD Affected various and later Fixed in — No fix listed CNA
- AMD Ryzen™ Embedded R1000 Series Processors VendorAMD Affected — Fixed in EmbeddedPI-FP5 1.2.0.A Patch available CNA
- AMD Ryzen™ Embedded R2000 Series Processors VendorAMD Affected — Fixed in EmbeddedR2KPI-FP5 1.0.0.2 Patch available CNA
- AMD Ryzen™ Embedded 5000 Series Processors VendorAMD Affected — Fixed in EmbAM4PI 1.0.0.2 Patch available CNA
- AMD Ryzen™ Embedded V1000 Series Processors VendorAMD Affected — Fixed in EmbeddedPI-FP5 1.2.0.A Patch available CNA
- AMD Ryzen™ Embedded V2000 Series Processors VendorAMD Affected — Fixed in EmbeddedPI-FP6 1.0.0.6 Patch available CNA
- AMD Ryzen™ Embedded V3000 Series Processors VendorAMD Affected — Fixed in EmbeddedPI-FP7r2 1.0.0.9 Patch available CNA
Remediation
- Fix · CNA AMD Ryzen™ 3000 Series Desktop Processors (AMD) Fixed in ComboAM4PI 1.0.0.9, ComboAM4 V2 PI 1.2.0.8
- Fix · CNA AMD Ryzen™ 5000 Series Desktop Processors (AMD) Fixed in ComboAM4 V2 PI 1.2.0.8
- Fix · CNA AMD Ryzen™ 5000 Series Desktop Processor with Radeon™ Graphics (AMD) Fixed in ComboAM4v2 PI 1.2.0.6
- Fix · CNA AMD Ryzen™ 7000 Series Desktop Processors (AMD) Fixed in ComboAM5 1.0.8.0
- Fix · CNA AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics (AMD) Fixed in ComboAM4PI 1.0.0.9, ComboAM4v2 PI 1.2.0.8
- Fix · CNA AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphics (AMD) Fixed in ComboAM4v2 PI 1.2.0.5
- Fix · CNA AMD Ryzen™ Threadripper™ 3000 Series Processors (AMD) Fixed in CastlePeakPI-SP3r3 1.0.0.7
- Fix · CNA AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors (AMD) Fixed in ChagallWSPI-sWRX8 1.0.0.2, CastlePeakWSPI-sWRX8 1.0.0.9
- Fix · CNA AMD Ryzen™ Threadripper™ PRO 5000WX Processors (AMD) Fixed in ChagallWSPI-sWRX8 1.0.0.2
- Fix · CNA AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics (AMD) Fixed in PicassoPI-FP5 1.0.0.E
- Fix · CNA AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics (AMD) Fixed in PollockPI-FT5 1.0.0.4
- Fix · CNA AMD Ryzen™ 3000 Series Mobile Processor with Radeon™ Graphics (AMD) Fixed in PicassoPI-FP5 1.0.0.E
- Fix · CNA AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics (AMD) Fixed in RenoirPI-FP6 1.0.0.8
- Fix · CNA AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics (AMD) Fixed in CezannePI-FP6 1.0.0.9
- Fix · CNA AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics (AMD) Fixed in CezannePI-FP6 1.0.0.9
- Fix · CNA AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics (AMD) Fixed in RembrandtPI-FP7 1.0.0.9b
- Fix · CNA AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics (AMD) Fixed in RembrandtPI-FP7 1.0.0.9b
- Fix · CNA AMD Ryzen™ 5000 Series Processors with Radeon™ Graphics (AMD) Fixed in CezannePI-FP6 1.0.0.9
- Fix · CNA AMD Ryzen™ 3000 Series Processors with Radeon™ Graphics (AMD) Fixed in CezannePI-FP6 1.0.0.9
- Fix · CNA AMD Ryzen™ Embedded R1000 Series Processors (AMD) Fixed in EmbeddedPI-FP5 1.2.0.A
- Fix · CNA AMD Ryzen™ Embedded R2000 Series Processors (AMD) Fixed in EmbeddedR2KPI-FP5 1.0.0.2
- Fix · CNA AMD Ryzen™ Embedded 5000 Series Processors (AMD) Fixed in EmbAM4PI 1.0.0.2
- Fix · CNA AMD Ryzen™ Embedded V1000 Series Processors (AMD) Fixed in EmbeddedPI-FP5 1.2.0.A
- Fix · CNA AMD Ryzen™ Embedded V2000 Series Processors (AMD) Fixed in EmbeddedPI-FP6 1.0.0.6
- Fix · CNA AMD Ryzen™ Embedded V3000 Series Processors (AMD) Fixed in EmbeddedPI-FP7r2 1.0.0.9
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics, AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics and 29 more products — amd.com/en/resources/product-security/bulletin/amd-sb-3003.…
8 records Highest priority Priority MEDIUM 1 MEDIUM, 7 LOW
Other records, highest priority first
- TI-2023-07040 Improper re-initialization of IOMMU during the DRTM event may permit an untrusted…Priority MEDIUM 49
- TI-2021-08171 Out-of-bounds write in AMD EPYC™ 7001 Series ProcessorsPriority LOW 37
- TI-2023-07029 Time-of-check time-of-use race condition in AMD EPYC™ 7001 ProcessorsPriority LOW 34
Timeline
- 2026-10-02 Threatist record created from CVE-2021-26387
- 2026-10-03 Alias added: GHSA-mcm9-3rfg-2mqm
References
More AMD vulnerabilities
- 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
Sources
- CVE-2021-26387 · CVE Program
- CVE-2021-26387 · NVD
- FIRST EPSS
- GHSA-mcm9-3rfg-2mqm · GitHub Advisory Database · CC BY 4.0
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