Improper input validation in AMD 2nd Gen EPYC
Priority LOW 29CWE-20Published · Updated
Key facts
- Attack vector
- Physical
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
Insufficient input validation in the ASP may allow an attacker with physical access, unauthorized write access to memory potentially leading to a loss of integrity or denial of service.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00283 20th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
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 | 2nd Gen EPYC | various | — | No fix listed | CNA |
| AMD | 3rd Gen EPYC | various | — | No fix listed | CNA |
- 2nd Gen EPYC VendorAMD Affected various Fixed in — No fix listed CNA
- 3rd Gen EPYC VendorAMD Affected various Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:amd:romepi_firmware:*:*:*:*:*:*:*:* | before 1.0.0.d | Vulnerable | AMD |
| cpe:2.3:h:amd:romepi:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:milanpi_firmware:*:*:*:*:*:*:*:* | before 1.0.0.6 | Vulnerable | AMD |
| cpe:2.3:h:amd:milanpi:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
- cpe:2.3:o:amd:romepi_firmware:*:*:*:*:*:*:*:* Versions before 1.0.0.d Vulnerable ·AMD
- cpe:2.3:h:amd:romepi:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:milanpi_firmware:*:*:*:*:*:*:*:* Versions before 1.0.0.6 Vulnerable ·AMD
- cpe:2.3:h:amd:milanpi:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-46767
- 2026-10-03 Alias added: GHSA-r95c-v4c6-2xcg
References
More AMD Milanpi Firmware vulnerabilities
- TI-2021-08226 Buffer overflow in AMD 3rd Gen EPYC CVSS 3.1HIGH 7.8
- TI-2023-06994 Improper input validation in AMD 2nd Gen EPYC CVSS 3.1HIGH 7.5
- TI-2021-21492 Out-of-bounds write in AMD 1st Gen EPYC CVSS 3.1HIGH 7.1
- TI-2021-21503 Out-of-bounds write in AMD 3rd Gen EPYC CVSS 3.1MEDIUM 5.5
- TI-2021-21484 Out-of-bounds read in AMD 2nd Gen EPYC CVSS 3.1MEDIUM 5.5
- TI-2023-06991 Use after free in AMD 3rd Gen AMD EPYC™ Processors CVSS 3.1LOW 3.3
Sources
- CVE-2021-46767 · CVE Program
- CVE-2021-46767 · NVD
- FIRST EPSS
- GHSA-r95c-v4c6-2xcg · GitHub Advisory Database · CC BY 4.0
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