UBUNTU-CVE-2025-52536

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2025-52536
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-52536.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2025-52536
Upstream
  • CVE-2025-52536
Published
2026-02-10T20:16:00Z
Modified
2026-06-25T19:15:18Z
Severity
  • 6.7 (Medium) CVSS_V4 - 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 CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Improper Prevention of Lock Bit Modification in SEV firmware could allow a privileged attacker to downgrade firmware potentially resulting in a loss of integrity.

References

Affected packages

Ubuntu:24.04:LTS / amd64-microcode

Package

Name
amd64-microcode
Purl
pkg:deb/ubuntu/amd64-microcode?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.20230808.1.1ubuntu1
3.20231019.1ubuntu1
3.20231019.1ubuntu2
3.20231019.1ubuntu2.1
3.20250311.1ubuntu0.24.04.1
3.20251202.1ubuntu0.24.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "amd64-microcode",
            "binary_version": "3.20251202.1ubuntu0.24.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-52536.json"

Ubuntu:25.10 / amd64-microcode

Package

Name
amd64-microcode
Purl
pkg:deb/ubuntu/amd64-microcode?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.20240820.1ubuntu1
3.20250311.1ubuntu1
3.20250708.1ubuntu1
3.20251202.1ubuntu0.25.10.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "amd64-microcode",
            "binary_version": "3.20251202.1ubuntu0.25.10.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-52536.json"

Ubuntu:26.04:LTS / amd64-microcode

Package

Name
amd64-microcode
Purl
pkg:deb/ubuntu/amd64-microcode?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.20250708.1ubuntu1
3.20250708.1ubuntu2
3.20251202.1ubuntu1
3.20251202.1ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "amd64-microcode",
            "binary_version": "3.20251202.1ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-52536.json"