CVE-2024-21980
Improper restriction of write operations in SNP firmware could allow a malicious hypervisor to potentially overwrite a guest's memory or UMC seed resulting...
- Published
- Aug 5, 2024
- Updated
- Aug 5, 2024
- Assigning CNA
- AMD
- Evidence observed
- Aug 5, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:NLow · next 30 days
- Percentile
- 37.5%
- Model date
- Oct 19, 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
Improper restriction of write operations in SNP firmware could allow a malicious hypervisor to potentially overwrite a guest's memory or UMC seed resulting in loss of confidentiality and integrity.
Sources
- cve-2024-21980-pocExploit
Exploit for CVE-2024-21980 targeting AMD SEV firmware to decrypt arbitrary memory of decommissioned SEV-SNP guests via a command buffer enforcement bypass.
Responsible use
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