CVE-2020-12966
MEDIUMCVSS 5.5/10EPSS 0.31%
Last modified
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/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
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
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2020-12966?
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Scan your code nowSource: NVD / NIST