Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest confidentiality.
Priority LOW 24CWE-20Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-668 and the CVSS impact.
Summary
Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest confidentiality.
Why it matters now
EPSS 0.0024 15th percentileScored 2026-11-07
Fix Fixed 3rd Gen AMD EPYC™ (AMD): MilanPI-SP3_1.0.0.4
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| AMD | 3rd Gen AMD EPYC™ | before MilanPI-SP3_1.0.0.4 | MilanPI-SP3_1.0.0.4 | Patch available | CNA |
- 3rd Gen AMD EPYC™ VendorAMD Affected before MilanPI-SP3_1.0.0.4 Fixed in MilanPI-SP3_1.0.0.4 Patch available CNA
CPE configurations NVD · 40
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:amd:epyc_7003_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_7003:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:epyc_72f3_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_72f3:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:epyc_7313_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_7313:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:epyc_7313p_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_7313p:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:epyc_7343_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_7343:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
- cpe:2.3:o:amd:epyc_7003_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_7003:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:epyc_72f3_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_72f3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:epyc_7313_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_7313:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:epyc_7313p_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_7313p:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:epyc_7343_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_7343:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
Show 30 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:amd:epyc_73f3_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_73f3:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:epyc_7413_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_7413:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:epyc_7443_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_7443:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:epyc_7443p_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_7443p:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:epyc_7453_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_7453:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:epyc_74f3_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_74f3:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:epyc_7513_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_7513:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:epyc_7543_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_7543:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:epyc_7543p_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_7543p:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:epyc_75f3_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_75f3:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:epyc_7643_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_7643:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:epyc_7663_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_7663:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:epyc_7713_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_7713:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:epyc_7713p_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_7713p:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
| cpe:2.3:o:amd:epyc_7763_firmware:*:*:*:*:*:*:*:* | before milanpi-sp3_1.0.0.4 | Vulnerable | AMD |
| cpe:2.3:h:amd:epyc_7763:-:*:*:*:*:*:*:* | not specified by NVD | Running on | AMD |
- cpe:2.3:o:amd:epyc_73f3_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_73f3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:epyc_7413_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_7413:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:epyc_7443_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_7443:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:epyc_7443p_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_7443p:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:epyc_7453_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_7453:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:epyc_74f3_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_74f3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:epyc_7513_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_7513:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:epyc_7543_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_7543:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:epyc_7543p_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_7543p:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:epyc_75f3_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_75f3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:epyc_7643_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_7643:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:epyc_7663_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_7663:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:epyc_7713_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_7713:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:epyc_7713p_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_7713p:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
- cpe:2.3:o:amd:epyc_7763_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
- cpe:2.3:h:amd:epyc_7763:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
Remediation
- Fix · CNA 3rd Gen AMD EPYC™ (AMD) Fixed in MilanPI-SP3_1.0.0.4
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
AMD 3rd Gen AMD EPYC™ MilanPI-SP3_1.0.0.4
14 records Highest priority Priority LOW 14 LOW
Other records, highest priority first
- TI-2021-08165 Improper access control in AMD 2nd Gen AMD EPYC™Priority LOW 35
- TI-2021-08149 Persistent platform private key may not be protected with a random IV leading to a potential “two time pad attack”.Priority LOW 35
- TI-2021-08158 Improper input validation in AMD 1st Gen AMD EPYC™Priority LOW 34
Timeline
- 2026-10-02 Threatist record created from CVE-2021-26327
- 2026-10-03 Alias added: GHSA-qg7x-g66q-6pmh
References
More AMD Epyc 7003 Firmware vulnerabilities
- TI-2021-08144 Improper input validation in AMD Ryzen 5000 Series CVSS 3.1HIGH 7.8
- TI-2021-08217 Out-of-bounds write in AMD 1st Gen EPYC CVSS 3.1HIGH 7.8
- TI-2020-10295 A potential denial of service (DoS) vulnerability exists in the integrated chipset that… CVSS 3.1HIGH 7.5
- TI-2023-07003 Memory corruption in AMD 2nd Gen EPYC CVSS 3.1HIGH 7.5
- TI-2023-07002 Improper input validation in AMD 3rd Gen EPYC CVSS 3.1HIGH 7.5
- TI-2023-07001 Memory corruption in AMD 2nd Gen EPYC CVSS 3.1HIGH 7.5
Sources
- CVE-2021-26327 · CVE Program
- CVE-2021-26327 · NVD
- FIRST EPSS
- GHSA-qg7x-g66q-6pmh · GitHub Advisory Database · CC BY 4.0
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