Home/CVE/Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest confidentiality.
CVE

CVE-2021-26327

Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest confidentiality.

Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest confidentiality.

MEDIUM · CVSS 5.5 EPSS 0.00129
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
CWE-668Exposure of Resource to Wrong Sphere
▤

Affected Products & Versions

20
amd epyc 7003 firmware< milanpi-sp3_1.0.0.4
amd epyc 72f3 firmware< milanpi-sp3_1.0.0.4
amd epyc 7313 firmware< milanpi-sp3_1.0.0.4
amd epyc 7313p firmware< milanpi-sp3_1.0.0.4
amd epyc 7343 firmware< milanpi-sp3_1.0.0.4
amd epyc 73f3 firmware< milanpi-sp3_1.0.0.4
amd epyc 7413 firmware< milanpi-sp3_1.0.0.4
amd epyc 7443 firmware< milanpi-sp3_1.0.0.4
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · psirt@amd.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD16 Nov 2021 · 07:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021Vendor Advisory
Intelligence Graph · click any node to traverse
CVETechnique ActorTool Family
drag to reposition · click any node to traverse · button top-right enlarges
External lookups - second-class, for what we don’t hold ourselves
NVDCVE.orgCISAVulnersExploit-DBGitHub PoCVulnCheck KEVGreyNoise
Vulnerabilities
CISA KEV catalog
CWE weaknesses
CAPEC attack patterns
Package vulnerabilities
Threat intelligence
Threat actors
Tools & malware
ATT&CK techniques
IOCs
Detection & defense
Sigma rules
YARA rules
Atomic Red Team tests
D3FEND countermeasures
Compliance
NIST 800-53
ISO 27001:2022
SOC 2 TSC
PCI-DSS v4.0
CIS Controls v8.1
About
All capabilities
Live statistics
Data sources
Privacy policy
Terms of service
threatengine.sh  ·  Open-source threat intelligence platform  ·  100+ authoritative sources  ·  Every fact traces to its origin