CVE-2021-26409 - Vulnerability Details - OpenCVE

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.

Published: 2023-01-10

Score: 7.8 High

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

AMD

3rd Gen EPYC

unaffected

Version	Status	Constraints
`various`	affected	—

Configuration 1 [-]

AND

cpe:2.3:o:amd:milanpi_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:amd:milanpi:-:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-13215	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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00057.

Exploitation none

Automatable no

Technical Impact total

References

Link	Providers
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032

History

Wed, 09 Apr 2025 15:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Subscriptions

Amd Milanpi Milanpi Firmware

MITRE

Status: PUBLISHED

Assigner: AMD

Published: 2023-01-10T20:56:47.043Z

Updated: 2025-04-09T14:52:43.998Z

Reserved: 2021-01-29T21:24:26.172Z

Link: CVE-2021-26409

Vulnrichment

Updated: 2024-08-03T20:26:25.399Z

NVD

Status : Modified

Published: 2023-01-11T08:15:11.743

Modified: 2025-04-09T15:15:44.103

Link: CVE-2021-26409

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-120

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