CVE-2020-12966

Name: CVE-2020-12966
Creator: NVD / NIST
Published: 2022-02-04T23:15:10.333+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.31%

Last modified Jun 17, 2026

CVE-2020-12966 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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.. EPSS estimates a 0.31% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.31%

22.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Amd	Epyc 7763 Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 7713p Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 7713 Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 7663 Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 7643 Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 75f3 Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 7543p Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 7543 Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 7513 Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 74f3 Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 7453 Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 7443p Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 7443 Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 7413 Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 73f3 Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 7343 Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 7313p Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 7313 Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 72f3 Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 7003 Firmware	< milanpi-sp3_1.0.0.5
Amd	Epyc 7001 Firmware	All versions
Amd	Epyc 7002 Firmware	All versions
Amd	Epyc 7232p Firmware	All versions
Amd	Epyc 7251 Firmware	All versions
Amd	Epyc 7252 Firmware	All versions
Amd	Epyc 7261 Firmware	All versions
Amd	Epyc 7262 Firmware	All versions
Amd	Epyc 7272 Firmware	All versions
Amd	Epyc 7281 Firmware	All versions
Amd	Epyc 7282 Firmware	All versions
Amd	Epyc 7301 Firmware	All versions
Amd	Epyc 7302 Firmware	All versions
Amd	Epyc 7302p Firmware	All versions
Amd	Epyc 7351 Firmware	All versions
Amd	Epyc 7351p Firmware	All versions
Amd	Epyc 7352 Firmware	All versions
Amd	Epyc 7371 Firmware	All versions
Amd	Epyc 7401 Firmware	All versions
Amd	Epyc 7401p Firmware	All versions
Amd	Epyc 7402 Firmware	All versions
Amd	Epyc 7402p Firmware	All versions
Amd	Epyc 7451 Firmware	All versions
Amd	Epyc 7452 Firmware	All versions
Amd	Epyc 7501 Firmware	All versions
Amd	Epyc 7502 Firmware	All versions
Amd	Epyc 7502p Firmware	All versions
Amd	Epyc 7532 Firmware	All versions
Amd	Epyc 7542 Firmware	All versions
Amd	Epyc 7551 Firmware	All versions
Amd	Epyc 7551p Firmware	All versions

Showing 50 of 107 affected configurations. See NVD for the full list.

References

http://www.openwall.com/lists/oss-security/2022/08/08/6Mailing List, Third Party Advisory
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1013Mitigation, Vendor Advisory
http://www.openwall.com/lists/oss-security/2022/08/08/6Mailing List, Third Party Advisory
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1013Mitigation, Vendor Advisory

Timeline

Published: Feb 4, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-12966?

How severe is CVE-2020-12966?

CVE-2020-12966 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.31% probability of exploitation in the next 30 days.

How do I fix CVE-2020-12966?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-12966?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST