CVE-2023-20573
LowPublished
Debug Exception Delivery in Secure Nested Paging
- Published
- Jan 11, 2024
- Updated
- Jun 20, 2025
- Assigning CNA
- AMD
- Evidence observed
- Aug 5, 2026
Primary CVSS
3.2/ 10Low
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N0.3%
Low · next 30 days
- Percentile
- 21.6%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
A privileged attacker can prevent delivery of debug exceptions to SEV-SNP guests potentially resulting in guests not receiving expected debug information.
Sources
1Proof-of-concept demonstrating CVE-2023-20573: a hardware vulnerability in AMD SEV-SNP that allows exception reinjection suppression in KVM, enabling instruction-level exploitation.
Responsible use
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