Out-of-bounds write in AMD 1st Gen EPYC
Priority LOW 32CWE-787Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- 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 SVC_ECC_PRIMITIVE system call in a compromised user application or ABL may allow an attacker to corrupt ASP (AMD Secure Processor) OS memory which may lead to potential loss of integrity and availability.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0018 7th 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 | 1st Gen EPYC | various | — | No fix listed | CNA |
| AMD | 2nd Gen EPYC | various | — | No fix listed | CNA |
| AMD | 3rd Gen EPYC | various | — | No fix listed | CNA |
- 1st Gen EPYC VendorAMD Affected various Fixed in — 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 · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:amd:romepi_firmware:*:*:*:*:*:*:*:* | before 1.0.0.c | Vulnerable | AMD |
| cpe:2.3:h:amd:romepi:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:milanpi_firmware:*:*:*:*:*:*:*:* | before 1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:milanpi:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:naplespi_firmware:*:*:*:*:*:*:*:* | before 1.0.0.g | Vulnerable | AMD |
| cpe:2.3:h:amd:naplespi:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
- cpe:2.3:o:amd:romepi_firmware:*:*:*:*:*:*:*:* Versions before 1.0.0.c 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 1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:milanpi:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:naplespi_firmware:*:*:*:*:*:*:*:* Versions before 1.0.0.g Vulnerable ·AMD
- cpe:2.3:h:amd:naplespi:-:*:*:*:*:*:*:* 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-2021-46779
- 2026-10-03 Alias added: GHSA-jr89-38hw-mr2v
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-2021-21483 Improper input validation in AMD 2nd Gen EPYC CVSS 3.1MEDIUM 6.1
- 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-2021-46779 · CVE Program
- CVE-2021-46779 · NVD
- FIRST EPSS
- GHSA-jr89-38hw-mr2v · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences