CVE-2025-48517

amd64-microcode: Insufficient Granularity of Access Control in SEV firmware could allow a privileged user with a malicious hypervisor...

CVE-2025-48517 is fixed in amd64-microcode on 1 platform by DEBIAN-CVE-2025-48517 (version 3.20260923.1), released February 10, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

n/a

No vendor severity

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0016

5th percentile

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.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
amd64-microcode · Debian 14	3.20260923.1	DEBIAN-CVE-2025-48517	Feb 10, 2026

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