CVE-2026-28247Improper Access Control Applied to Mirrored or Aliased Memory Regions in AMD Secure Encrypted Virtualization (SEV) firmware could allow a…
- 5.9MediumCVSS base score
- 0.10%Exploitation in 30 daysEPSS · top 99% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Improper Access Control Applied to Mirrored or Aliased Memory Regions in AMD Secure Encrypted Virtualization (SEV) firmware could allow a malicious hypervisor to change the encryption bit for guest context pages potentially resulting in loss of integrity.
Timeline
ID reserved
By AMD
- 9 months later
· 9 months later
Published
- 2 days later
· 2 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| AMDCNA (assigner) | 4.0 | Medium5.9 | CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N |
| NVDNVD · Awaiting Analysis | 4.0 | Medium5.9 | CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.10% · top 99% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.
Affected products
AMD · AMD EPYC™ 9004 Series Processors
- unaffected GenoaPI_1.0.0.J
AMD · AMD EPYC™ 7003 Series Processors
- unaffected MilanPI-SP3_1.0.0.K
AMD · AMD EPYC™ 9005 Series Processors
- unaffected TurinPI_1.0.0.B
AMD · AMD EPYC™ 8004 Series Processors
- unaffected GenoaPI_1.0.0.J
AMD · AMD EPYC™ 8005 Series Processors
- unaffected TurinPI_1.0.0.B
AMD · AMD EPYC™ Embedded 7003 Series Processors
- unaffected EmbMilanPI-SP3 1.0.0.E
AMD · AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa")
- unaffected EmbeddedGenoaPI_1.0.0.E
AMD · AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Bergamo")
- unaffected EmbeddedGenoaPI_1.0.0.E
AMD · AMD EPYC™ Embedded 8004 Series Processors
- unaffected EmbeddedGenoaPI_1.0.0.E
AMD · AMD EPYC™ Embedded 9005 Series Processors
- unaffected EmbeddedTurinPI_SP5_1005
References
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-123044 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-28247)Record last updated .