AMD EPYC 9005 Processors/EPYC Embedded 9005 Processors SEV Firmware insufficient granularity of access control

CVSS Meta Temp Score
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CTI Interest Score
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2.2$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in AMD EPYC 9005 Processors and EPYC Embedded 9005 Processors. This vulnerability affects unknown code of the component SEV Firmware. Such manipulation leads to insufficient granularity of access control. This vulnerability is uniquely identified as CVE-2025-48517. Local access is required to approach this attack. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in AMD EPYC 9005 Processors and EPYC Embedded 9005 Processors (unknown version). It has been rated as problematic. Affected by this issue is an unknown code block of the component SEV Firmware. The manipulation with an unknown input leads to a insufficient granularity of access control vulnerability. Using CWE to declare the problem leads to CWE-1220. The product implements access controls via a policy or other feature with the intention to disable or restrict accesses (reads and/or writes) to assets in a system from untrusted agents. However, implemented access controls lack required granularity, which renders the control policy too broad because it allows accesses from unauthorized agents to the security-sensitive assets. Impacted is confidentiality. CVE summarizes:

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.

The advisory is shared for download at amd.com. This vulnerability is handled as CVE-2025-48517 since 05/22/2025. The exploitation is known to be easy. The attack needs to be approached locally. Additional levels of successful authentication are required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 298580 (Linux Distros Unpatched Vulnerability : CVE-2025-48517), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (298580). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 2.3
VulDB Meta Temp Score: 2.2

VulDB Base Score: 2.3
VulDB Temp Score: 2.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Insufficient granularity of access control
CWE: CWE-1220 / CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 298580
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-48517

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/22/2025 CVE reserved
02/11/2026 +265 days Advisory disclosed
02/11/2026 +0 days VulDB entry created
02/11/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: amd.com
Status: Confirmed

CVE: CVE-2025-48517 (🔒)
GCVE (CVE): GCVE-0-2025-48517
GCVE (VulDB): GCVE-100-345392

Entryinfo

Created: 02/11/2026 05:02
Updated: 02/11/2026 19:37
Changes: 02/11/2026 05:02 (64), 02/11/2026 19:37 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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