Is CVE-2021-26384 in the CISA KEV catalog?

No. CVE-2021-26384 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-26384?

CVE-2021-26384 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-26384?

CVE-2021-26384 has an EPSS score of 0.20% (10th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-26384?

Upgrade ryzen 3 2200u firmware to comboam4v2_pi_1.2.0.6c or later. Fixes are available for 37 affected products.

CVE & CISA-KEV Catalog

CVE-2021-26384

HIGH

7.8

CVSS v3

NVD

Description

A malformed SMI (System Management Interface) command may allow an attacker to establish a corrupted SMI Trigger Info data structure, potentially leading to out-of-bounds memory reads and writes when triggering an SMI resulting in a potential loss of resources.

CWE-125Out-of-bounds Read CWE-787Out-of-bounds Write

How to fix

Remediation Available

ryzen 3 2200u firmwareNVD

Affected:< comboam4v2_pi_1.2.0.6cFixed in:comboam4v2_pi_1.2.0.6cCVE-2021-26384derived from NVD

ryzen 3 2300u firmwareNVD

Affected:< comboam4v2_pi_1.2.0.6cFixed in:comboam4v2_pi_1.2.0.6cCVE-2021-26384derived from NVD

ryzen 3 5125c firmwareNVD

Affected:< cezannepi-fp6_1.0.0.9Fixed in:cezannepi-fp6_1.0.0.9CVE-2021-26384derived from NVD

ryzen 3 5300g firmwareNVD

Affected:< comboam4_v2_pi_1.2.0.6cFixed in:comboam4_v2_pi_1.2.0.6cCVE-2021-26384derived from NVD

ryzen 3 5300ge firmwareNVD

Affected:< comboam4_v2_pi_1.2.0.6cFixed in:comboam4_v2_pi_1.2.0.6cCVE-2021-26384derived from NVD

ryzen 3 5400u firmwareNVD

Affected:< cezannepi-fp6_1.0.0.9Fixed in:cezannepi-fp6_1.0.0.9CVE-2021-26384derived from NVD

ryzen 3 5425c firmwareNVD

Affected:< cezannepi-fp6_1.0.0.9Fixed in:cezannepi-fp6_1.0.0.9CVE-2021-26384derived from NVD

ryzen 3 5425u firmwareNVD

Affected:< cezannepi-fp6_1.0.0.9Fixed in:cezannepi-fp6_1.0.0.9CVE-2021-26384derived from NVD

ryzen 5 2500u firmwareNVD

Affected:< comboam4v2_pi_1.2.0.6cFixed in:comboam4v2_pi_1.2.0.6cCVE-2021-26384derived from NVD

ryzen 5 2600 firmwareNVD

Affected:< comboam4v2_pi_1.2.0.6cFixed in:comboam4v2_pi_1.2.0.6cCVE-2021-26384derived from NVD

ryzen 5 2600h firmwareNVD

Affected:< comboam4v2_pi_1.2.0.6cFixed in:comboam4v2_pi_1.2.0.6cCVE-2021-26384derived from NVD

ryzen 5 2600x firmwareNVD

Affected:< comboam4v2_pi_1.2.0.6cFixed in:comboam4v2_pi_1.2.0.6cCVE-2021-26384derived from NVD

ryzen 5 2700 firmwareNVD

Affected:< comboam4v2_pi_1.2.0.6cFixed in:comboam4v2_pi_1.2.0.6cCVE-2021-26384derived from NVD

ryzen 5 2700x firmwareNVD

Affected:< comboam4v2_pi_1.2.0.6cFixed in:comboam4v2_pi_1.2.0.6cCVE-2021-26384derived from NVD

ryzen 5 5560u firmwareNVD

Affected:< cezannepi-fp6_1.0.0.9Fixed in:cezannepi-fp6_1.0.0.9CVE-2021-26384derived from NVD

ryzen 5 5600g firmwareNVD

Affected:< comboam4_v2_pi_1.2.0.6cFixed in:comboam4_v2_pi_1.2.0.6cCVE-2021-26384derived from NVD

ryzen 5 5600ge firmwareNVD

Affected:< comboam4_v2_pi_1.2.0.6cFixed in:comboam4_v2_pi_1.2.0.6cCVE-2021-26384derived from NVD

ryzen 5 5600h firmwareNVD

Affected:< cezannepi-fp6_1.0.0.9Fixed in:cezannepi-fp6_1.0.0.9CVE-2021-26384derived from NVD

ryzen 5 5600hs firmwareNVD

Affected:< cezannepi-fp6_1.0.0.9Fixed in:cezannepi-fp6_1.0.0.9CVE-2021-26384derived from NVD

ryzen 5 5600u firmwareNVD

Affected:< cezannepi-fp6_1.0.0.9Fixed in:cezannepi-fp6_1.0.0.9CVE-2021-26384derived from NVD

ryzen 5 5625c firmwareNVD

Affected:< cezannepi-fp6_1.0.0.9Fixed in:cezannepi-fp6_1.0.0.9CVE-2021-26384derived from NVD

ryzen 5 5625u firmwareNVD

Affected:< cezannepi-fp6_1.0.0.9Fixed in:cezannepi-fp6_1.0.0.9CVE-2021-26384derived from NVD

ryzen 7 2700 firmwareNVD

Affected:< comboam4v2_pi_1.2.0.6cFixed in:comboam4v2_pi_1.2.0.6cCVE-2021-26384derived from NVD

ryzen 7 2700u firmwareNVD

Affected:< comboam4v2_pi_1.2.0.6cFixed in:comboam4v2_pi_1.2.0.6cCVE-2021-26384derived from NVD

ryzen 7 2700x firmwareNVD

Affected:< comboam4v2_pi_1.2.0.6cFixed in:comboam4v2_pi_1.2.0.6cCVE-2021-26384derived from NVD

ryzen 7 2800h firmwareNVD

Affected:< comboam4v2_pi_1.2.0.6cFixed in:comboam4v2_pi_1.2.0.6cCVE-2021-26384derived from NVD

ryzen 7 5700g firmwareNVD

Affected:< comboam4_v2_pi_1.2.0.6cFixed in:comboam4_v2_pi_1.2.0.6cCVE-2021-26384derived from NVD

ryzen 7 5700ge firmwareNVD

Affected:< comboam4_v2_pi_1.2.0.6cFixed in:comboam4_v2_pi_1.2.0.6cCVE-2021-26384derived from NVD

ryzen 7 5800h firmwareNVD

Affected:< cezannepi-fp6_1.0.0.9Fixed in:cezannepi-fp6_1.0.0.9CVE-2021-26384derived from NVD

ryzen 7 5800hs firmwareNVD

Affected:< cezannepi-fp6_1.0.0.9Fixed in:cezannepi-fp6_1.0.0.9CVE-2021-26384derived from NVD

ryzen 7 5800u firmwareNVD

Affected:< cezannepi-fp6_1.0.0.9Fixed in:cezannepi-fp6_1.0.0.9CVE-2021-26384derived from NVD

ryzen 7 5825c firmwareNVD

Affected:< cezannepi-fp6_1.0.0.9Fixed in:cezannepi-fp6_1.0.0.9CVE-2021-26384derived from NVD

ryzen 7 5825u firmwareNVD

Affected:< cezannepi-fp6_1.0.0.9Fixed in:cezannepi-fp6_1.0.0.9CVE-2021-26384derived from NVD

ryzen 9 5900hs firmwareNVD

Affected:< cezannepi-fp6_1.0.0.9Fixed in:cezannepi-fp6_1.0.0.9CVE-2021-26384derived from NVD

ryzen 9 5900hx firmwareNVD

Affected:< cezannepi-fp6_1.0.0.9Fixed in:cezannepi-fp6_1.0.0.9CVE-2021-26384derived from NVD

ryzen 9 5980hs firmwareNVD

Affected:< cezannepi-fp6_1.0.0.9Fixed in:cezannepi-fp6_1.0.0.9CVE-2021-26384derived from NVD

ryzen 9 5980hx firmwareNVD

Affected:< cezannepi-fp6_1.0.0.9Fixed in:cezannepi-fp6_1.0.0.9CVE-2021-26384derived 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

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.20%probability of exploitation in 30 days

10thpercentile

Low risk: more likely to be exploited than 10% of all known CVEs.

References

Vendor Advisory1

amd.com

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2023-21769	High	7.5	92%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2020-8794	Critical	9.8	89%	-	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 2024-11-21.