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Vulnerability record · CVE-2020-12966 · published 4 February 2022

CVE-2020-12966: Amd epyc 7763 firmware information exposure vulnerability

AAmd · Epyc 7763 Firmware

AMD EPYC™ Processors contain an information disclosure vulnerability in the Secure Encrypted Virtualization with Encrypted State (SEV-ES) and Secure Encrypted Virtualization with Secure Nested Paging (SEV-SNP). A local authenticated attacker could potentially exploit this vulnerability leading to leaking guest data by the malicious hypervisor.

5.5 CVSS 3.1 Medium EPSS 0.31% · top 78.1% CWE-200 · Information exposure
5.5CVSS 3.1 base score, v2 2.1
0.31%EPSS exploitation probability, 30 days
NoNot in CISA KEV
107Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

AMD EPYC™ Processors contain an information disclosure vulnerability in the Secure Encrypted Virtualization with Encrypted State (SEV-ES) and Secure Encrypted Virtualization with Secure Nested Paging (SEV-SNP). A local authenticated attacker could potentially exploit this vulnerability leading to leaking guest data by the malicious hypervisor.

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

Affected products

107 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.openwall.com/lists/oss-security/2022/08/08/6 Mailing ListThird Party Advisory
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1013 MitigationVendor Advisory
http://www.openwall.com/lists/oss-security/2022/08/08/6 Mailing ListThird Party Advisory
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1013 MitigationVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-12966), CISA KEV, FIRST EPSS (scores of 2026-09-30). This page is refreshed as NVD updates the record.