VDB-345391 · CVE-2025-48514 · Nessus 298583

AMD EPYC 9004 Processors SEV Firmware insufficient granularity of access control

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
2.2	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in AMD EPYC 9004 Processors, EPYC 7003 Processors, EPYC 9005 Processors, EPYC 8004 Processors, EPYC Embedded 7003 Processors, EPYC Embedded 9004 Processors, EPYC Embedded 9005 Processors and EPYC Embedded 8004 Processors. This affects an unknown part of the component SEV Firmware. This manipulation causes insufficient granularity of access control. This vulnerability is handled as CVE-2025-48514. It is possible to launch the attack on the local host. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in AMD EPYC 9004 Processors, EPYC 7003 Processors, EPYC 9005 Processors, EPYC 8004 Processors, EPYC Embedded 7003 Processors, EPYC Embedded 9004 Processors, EPYC Embedded 9005 Processors and EPYC Embedded 8004 Processors. It has been declared as problematic. Affected by this vulnerability is an unknown code of the component SEV Firmware. The manipulation with an unknown input leads to a insufficient granularity of access control vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality. The summary by CVE is:

Insufficient Granularity of Access Control in SEV firmware can allow a privileged attacker to create a SEV-ES Guest to attack SNP guest, potentially resulting in a loss of confidentiality.

It is possible to read the advisory at amd.com. This vulnerability is known as CVE-2025-48514 since 05/22/2025. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation needs additional levels of successful authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 298583 (Linux Distros Unpatched Vulnerability : CVE-2025-48514), 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 (298583). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

License

commercial

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

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 298583
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-48514

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-2025-48514 (🔒)
GCVE (CVE): GCVE-0-2025-48514
GCVE (VulDB): GCVE-100-345391

Entryinfo

Created: 02/11/2026 05:02
Updated: 02/11/2026 19:09
Changes: 02/11/2026 05:02 (64), 02/11/2026 19:09 (2)
Complete: 🔍
Cache ID: 216::103