CVE-2021-26406 | BDVDB-2026-201804 Detail

AMDRyzen™ 2000 series Desktop Processors “Raven Ridge” AM4

Description#

Insufficient validation in parsing Owner's Certificate Authority (OCA) certificates in SEV (AMD Secure Encrypted Virtualization) and SEV-ES user application can lead to a host crash potentially resulting in denial of service.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact high. Attack vector: network.

Weaknesses#

No weakness recorded in the source data.

References#

Exploit#

No public exploit known

History#

Version 12023-05-09Record published in the CVE List.
Version 22025-01-28Most recent update recorded in the CVE List.

Published

Published: 2023-05-09
Last modified: 2025-01-28

Vendor information

Vendor: AMD
Product: Ryzen™ 2000 series Desktop Processors “Raven Ridge” AM4

All AMD vulnerabilities

Score

7.5 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 36.2.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
various
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.5 High

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	None
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).