CVE-2025-52536 — Improper Prevention of Lock Bit Modification in Amd64-microcode
Severity
6.7MEDIUMNVD
EPSS
0.0%
top 95.46%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedFeb 10
Description
Improper Prevention of Lock Bit Modification in SEV firmware could allow a privileged attacker to downgrade firmware potentially resulting in a loss of integrity.
CVSS vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Affected Packages1 packages
🔴Vulnerability Details
2OSV▶
CVE-2025-52536: Improper Prevention of Lock Bit Modification in SEV firmware could allow a privileged attacker to downgrade firmware potentially resulting in a loss o↗2026-02-10
GHSA▶
GHSA-546x-462h-qqw8: Improper Prevention of Lock Bit Modification in SEV firmware could allow a privileged attacker to downgrade firmware potentially resulting in a loss o↗2026-02-10
📋Vendor Advisories
1Debian▶
CVE-2025-52536: amd64-microcode - Improper Prevention of Lock Bit Modification in SEV firmware could allow a privi...↗2025