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CVE Vulnerability Details :
CVE-2021-26355
PUBLISHED
More InfoOfficial Page
Assigner-AMD
Assigner Org ID-b58fc414-a1e4-4f92-9d70-1add41838648
View Known Exploited Vulnerability (KEV) details
Published At-10 Jan, 2023 | 20:56
Updated At-09 Apr, 2025 | 14:56
Rejected At-
▼CVE Numbering Authority (CNA)

Insufficient fencing and checks in System Management Unit (SMU) may result in access to invalid message port registers that could result in a potential denial-of-service.

Affected Products
Vendor
Advanced Micro Devices, Inc.AMD
Product
3rd Gen EPYC
Package Name
AGESA
Platforms
  • x86
Default Status
unaffected
Versions
Affected
  • various
Problem Types
TypeCWE IDDescription
textN/An/a
Type: text
CWE ID: N/A
Description: n/a
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032
vendor-advisory
Hyperlink: https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032
Resource:
vendor-advisory
▼Authorized Data Publishers (ADP)
1. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032
vendor-advisory
x_transferred
Hyperlink: https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032
Resource:
vendor-advisory
x_transferred
2. CISA ADP Vulnrichment
Affected Products
Problem Types
TypeCWE IDDescription
CWECWE-693CWE-693 Protection Mechanism Failure
Type: CWE
CWE ID: CWE-693
Description: CWE-693 Protection Mechanism Failure
Metrics
VersionBase scoreBase severityVector
3.15.5MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Version: 3.1
Base score: 5.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found