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CVE-2021-26409

Published: Jan 10, 2023Updated: Apr 9, 2025 Sources: CVE List NVD BDUCWE-120
NVD MITRE
7.8CVSSHIGH
EPSS Score
0.2%
Top 91.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Insufficient bounds checking in SEV-ES may allow an attacker to corrupt Reverse Map table (RMP) memory, potentially resulting in a loss of SNP (Secure Nested Paging) memory integrity.

CVSS Vector Breakdown

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

Weaknesses

CWE-120

Affected Products

3rd Gen EPYCAMDHardware Firmware
milanpi firmwareamdHardware Firmware
SR635Lenovo Group LimitedHardware Firmware
SR655Lenovo Group LimitedHardware Firmware
SR645Lenovo Group LimitedHardware Firmware
amdcommercialUSHardware Firmwareaka advanced micro devices
lenovo group limitedcommercialCNHardware Firmwareaka lenovo
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://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032
amd.com
https://nvd.nist.gov/vuln/detail/CVE-2021-26409
nvd.nist.gov
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032
amd.com
and 1 more references View all →

Timeline

Published
Jan 10, 2023
Last Updated
Apr 9, 2025

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