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CVE-2021-46791

Published: Jan 10, 2023Updated: Apr 9, 2025 Sources: CVE List NVD BDUCWE-787
NVD MITRE
5.5CVSSMEDIUM
EPSS Score
0.2%
Top 92.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Insufficient input validation during parsing of the System Management Mode (SMM) binary may allow a maliciously crafted SMM executable binary to corrupt Dynamic Root of Trust for Measurement (DRTM) user application memory that may result in a potential denial of service.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-787

Affected Products

SR635Lenovo Group LimitedHardware Firmware
SR655Lenovo Group LimitedHardware Firmware
SR645Lenovo Group LimitedHardware Firmware
SR665Lenovo Group LimitedHardware Firmware
3rd Gen AMD EPYCAdvanced Micro Devices Inc.Hardware Firmware
lenovo group limitedcommercialCNHardware Firmwareaka lenovo
advanced micro devices inc.commercialUSHardware Firmwareaka amd
and 2 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://vuldb.com/ru/?id.217975
vuldb.com
https://nvd.nist.gov/vuln/detail/CVE-2021-46791
nvd.nist.gov
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032
amd.com
and 2 more references View all →

Timeline

Published
Jan 10, 2023
Last Updated
Apr 9, 2025

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