What is CVE-2020-12966?

CVE-2020-12966 is a medium-severity vulnerability in Amd 1st/2nd/3rd Gen Epyc™ Processors, classified under Information Disclosure. CVSS score: 5.5/10. Published 2022-02-04.

How severe is CVE-2020-12966?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2020-12966 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Information disclosure in Amd 1st/2nd/3rd Gen Epyc™ Processors

CVE-2020-12966

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.

Vulnerability class: Information Disclosure

EPSS: 0.003 (23.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

CWE-200 — Information Disclosure

Public proof-of-concept exploits

References

psirt@amd.com (x_refsource_MISC, Mitigation, Vendor Advisory)
psirt@amd.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2020-12966?: CVE-2020-12966 is a medium-severity vulnerability in Amd 1st/2nd/3rd Gen Epyc™ Processors, classified under Information Disclosure. CVSS score: 5.5/10. Published 2022-02-04.
How severe is CVE-2020-12966?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2020-12966 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.