CVE-2025-48517 — Insufficient Granularity of Access Control in Amd64-microcode
Severity
4.6MEDIUMNVD
EPSS
0.0%
top 95.46%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedFeb 10
Description
Insufficient Granularity of Access Control in SEV firmware could allow a privileged user with a malicious hypervisor to create a SEV-ES guest with an ASID in the range meant for SEV-SNP guests potentially resulting in a partial loss of confidentiality.
CVSS vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N
Affected Packages1 packages
🔴Vulnerability Details
2OSV▶
CVE-2025-48517: Insufficient Granularity of Access Control in SEV firmware could allow a privileged user with a malicious hypervisor to create a SEV-ES guest with an↗2026-02-10
GHSA▶
GHSA-jhpq-g463-wv89: Insufficient Granularity of Access Control in SEV firmware could allow a privileged user with a malicious hypervisor to create a SEV-ES guest with an↗2026-02-10
📋Vendor Advisories
1Debian▶
CVE-2025-48517: amd64-microcode - Insufficient Granularity of Access Control in SEV firmware could allow a privile...↗2025