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CVE-2021-26397

HIGH

7.1

CVSS Score

Published: May 9, 2023 at 06:36 PM UTC

Updated: June 17, 2026 at 03:43 AM UTC

47 products affected across 1 vendorEpyc 7713P FirmwareEpyc 7663 FirmwareEpyc 7413 Firmware

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Severity

HIGH7.1

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

Insufficient address validation, may allow an attacker with a compromised ABL and UApp to corrupt sensitive memory locations potentially resulting in a loss of integrity or availability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Epyc 72F3 Firmware · AMD

95%

v < milanpi_1.0.0.9

Affected range stops below milanpi_1.0.0.9, so it looks safe — our inference, not a vendor statement

amd-epyc-72f3 (same device)

Epyc 7313 Firmware · AMD

95%

v < milanpi_1.0.0.9

Affected range stops below milanpi_1.0.0.9, so it looks safe — our inference, not a vendor statement

amd-epyc-7313 (same device)

Epyc 7313P Firmware · AMD

95%

v < milanpi_1.0.0.9

Affected range stops below milanpi_1.0.0.9, so it looks safe — our inference, not a vendor statement

amd-epyc-7313p (same device)

Epyc 7343 Firmware · AMD

95%

v < milanpi_1.0.0.9

Affected range stops below milanpi_1.0.0.9, so it looks safe — our inference, not a vendor statement

amd-epyc-7343 (same device)

Epyc 7373X Firmware · AMD

95%

v < milanpi_1.0.0.9

Affected range stops below milanpi_1.0.0.9, so it looks safe — our inference, not a vendor statement

amd-epyc-7373x (same device)

Epyc 73F3 Firmware · AMD

95%

v < milanpi_1.0.0.9

Affected range stops below milanpi_1.0.0.9, so it looks safe — our inference, not a vendor statement

amd-epyc-73f3 (same device)

Epyc 7413 Firmware · AMD

95%

v < milanpi_1.0.0.9

Affected range stops below milanpi_1.0.0.9, so it looks safe — our inference, not a vendor statement

amd-epyc-7413 (same device)

Epyc 7443 Firmware · AMD

95%

v < milanpi_1.0.0.9

Affected range stops below milanpi_1.0.0.9, so it looks safe — our inference, not a vendor statement

amd-epyc-7443 (same device)

Epyc 7443P Firmware · AMD

95%

v < milanpi_1.0.0.9

Affected range stops below milanpi_1.0.0.9, so it looks safe — our inference, not a vendor statement

amd-epyc-7443p (same device)

Epyc 7453 Firmware · AMD

95%

v < milanpi_1.0.0.9

Affected range stops below milanpi_1.0.0.9, so it looks safe — our inference, not a vendor statement

amd-epyc-7453 (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001

References (1)

Vendor Advisory

Source: [email protected]

https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGHCISA-ADP

Attack Vector: LOCAL
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

NVD-CWE-noinfo

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