CVE & CISA-KEV Catalog

CVE-2021-26404

MEDIUM

5.5

CVSS v3

Description

Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure.

CWE-20Improper Input Validation

How to fix

Remediation Available

epyc 7003 firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 7313 firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 7313p firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 7343 firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 7373x firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 73f3 firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 7413 firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 7443 firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 7443p firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 7453 firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 7473x firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 74f3 firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 7513 firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 7543 firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 7543p firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 7573x firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 75f3 firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 7643 firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 7663 firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 7713 firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 7713p firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 7763 firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

epyc 7773x firmwareNVD

Affected:< milanpi-sp3_1.0.0.9Fixed in:milanpi-sp3_1.0.0.9CVE-2021-26404derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

0.18%probability of exploitation in 30 days

8thpercentile

Low risk: more likely to be exploited than 8% of all known CVEs.

References

Vendor Advisory1

amd.com

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-04-08.