VDB-175016 · CVE-2021-26311 · amd-sb-1004

AMD CPU SEV/SEV-ES privilege escalation

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.
8.0	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in AMD CPU. The affected element is an unknown function of the component SEV/SEV-ES. Such manipulation leads to an unknown weakness. This vulnerability is documented as CVE-2021-26311. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in AMD CPU (Chip Software) (affected version not known). Affected by this issue is some unknown functionality of the component SEV/SEV-ES. Impacted is confidentiality, integrity, and availability.

The weakness was released 05/13/2021 as amd-sb-1004. The advisory is shared for download at amd.com. This vulnerability is handled as CVE-2021-26311. There are neither technical details nor an exploit publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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

Productinfo

Type

Chip Software

Vendor

Name

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 8.0

VulDB Base Score: 8.0
VulDB Temp Score: 8.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/29/2021 🔍
05/13/2021 +103 days 🔍
05/13/2021 +0 days 🔍
05/16/2021 +3 days 🔍

Sourcesinfo

Advisory: amd-sb-1004
Status: Confirmed

CVE: CVE-2021-26311 (🔍)
GCVE (CVE): GCVE-0-2021-26311
GCVE (VulDB): GCVE-100-175016

Entryinfo

Created: 05/13/2021 19:21
Updated: 05/16/2021 08:12
Changes: 05/13/2021 19:21 (35), 05/16/2021 08:12 (2)
Complete: 🔍
Cache ID: 216::103