Vulnerability in AMD EPYC™ 9004 Series Processors
CVSS score
4.6
EPSS probability
—
Risk score
0.5
Published
11 h ago
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
1
Source agreement
Tam uyum
Evidence confidence
%50
Short explanation
Improper preservation of consistency in AMD Secure Encrypted Virtualization (SEV) firmware could let a malicious hypervisor affect cache coherency and compromise guest page integrity.
The flaw endangers data integrity in virtualized environments, potentially enabling compromise of critical systems.
What should be done?
- Monitor AMD security bulletins (S0)
- Apply firmware updates when released
- Restrict hypervisor privileges
- Employ defense‑in‑depth measures
The sources give limited detail on some technical conditions. Review the chain of evidence below before deciding how to act.
Chain of evidence and sources
Bu açık, kötü niyetli bir hipervizörün önbellek tutarlılığını etkileyerek misafir sayfa bütünlüğünü bozmasına yol açabilir (S0).
Resmî kaynaklarda yama durumu doğrulanamadı; yama durumu UNKNOWN olarak rapor edilmiştir (S0).
Show the technical text from the sources
Improper preservation of consistency between independent representations of shared state in AMD Secure Encrypted Virtualization (SEV) firmware could allow a malicious hypervisor to potentially affect cache coherency for guest context pages resulting in loss of integrity.
CVSS vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N
CWE: CWE-1250
This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-28249 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | amd | AMD EPYC™ 9004 Series Processors | View |
| 2 | amd | AMD EPYC™ 7003 Series Processors | View |
| 3 | amd | AMD EPYC™ 8004 Series Processors | View |
| 4 | amd | AMD EPYC™ Embedded 7003 Series Processors | View |
| 5 | amd | AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa") | View |
| 6 | amd | AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Bergamo") | View |
| 7 | amd | AMD EPYC™ Embedded 8004 Series Processors | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 4.6 | CVSS V40 | MEDIUM | CVSS:4.0/AV:L/AC:L/AT:P/PR:N/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 | NVD |
| 4.6 | CVSS V4_0 | MEDIUM | CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N | CVE CNA |
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-28249 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-28249 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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