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CVE-2021-46778

Quick assessment

Affected
AMD AMD Processors
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

AMD Ryzen是美国AMD公司的一款中央处理器（CPU）。 AMD Ryzen存在安全漏洞。攻击者利用该漏洞泄露敏感信息。

AI Predicted 5.3 Difficulty: Hard EPSS 0.23% · P14

Possible ATT&CK Techniques 1 AI

T1570 · Lateral Tool Transfer
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I. Basic Information for CVE-2021-46778

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Execution unit scheduler contention may lead to a side channel vulnerability found on AMD CPU microarchitectures codenamed “Zen 1”, “Zen 2” and “Zen 3” that use simultaneous multithreading (SMT). By measuring the contention level on scheduler queues an attacker may potentially leak sensitive information.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
AMD Ryzen 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AMD Ryzen是美国AMD公司的一款中央处理器（CPU）。 AMD Ryzen存在安全漏洞。攻击者利用该漏洞泄露敏感信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
AMD AMD Processors Processor Some AMD Processors -

II. Public POCs for CVE-2021-46778

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-46778

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Other References for CVE-2021-46778 (1)

IV. Related Vulnerabilities

Same product: AMD Processors
Same vendor: AMD

V. Comments for CVE-2021-46778

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