CVE-2021-26316
Quick assessment
Affected
AMD Ryzen 5000 Series
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 Athlon是美国超威半导体（AMD）公司的一系列微处理器。 AMD Athlon™ Processors、Ryzen™ Processors、Threadripper™ Processors存在输入验证错误漏洞，该漏洞源于未能验证BIOS中的通信缓冲区和通信服务是否允许攻击者篡改缓冲区，从而导致潜在的SMM（系统管理模式）执行任意代码。
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I. Basic Information for CVE-2021-26316
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Failure to validate the communication buffer and communication service in the BIOS may allow an attacker to tamper with the buffer resulting in potential SMM (System Management Mode) arbitrary code execution.
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 Athlon 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AMD Athlon是美国超威半导体（AMD）公司的一系列微处理器。 AMD Athlon™ Processors、Ryzen™ Processors、Threadripper™ Processors存在输入验证错误漏洞，该漏洞源于未能验证BIOS中的通信缓冲区和通信服务是否允许攻击者篡改缓冲区，从而导致潜在的SMM（系统管理模式）执行任意代码。
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 | Ryzen 5000 Series | various | - |
|
| AMD | Ryzen 2000 Series | various | - |
|
| AMD | Ryzen 3000 Series | various | - |
|
| AMD | 1st Gen EPYC | various | - |
|
| AMD | 2nd Gen EPYC | Various | - |
|
| AMD | 3rd Gen EPYC | various | - |
|
II. Public POCs for CVE-2021-26316
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2021-26316 (2)
Same Patch Batch · AMD · 2023-01-10 · 14 CVEs total
| CVE-2021-26346 | AMD Secure Processor 输入验证错误漏洞 | |
| CVE-2021-26407 | AMD Secure Processor 安全特征问题漏洞 | |
| CVE-2021-46767 | AMD Secure Processor (ASP) 输入验证错误漏洞 | |
| CVE-2021-46768 | AMD Secure Encrypted Virtualization 缓冲区错误漏洞 | |
| CVE-2021-46795 | 多款AMD产品 安全漏洞 | |
| CVE-2022-23813 | AMD System Management Unit 缓冲区错误漏洞 | |
| CVE-2023-20522 | AMD Secure Processor(ASP) 输入验证错误漏洞 | |
| CVE-2023-20523 | AMD Secure Processor(ASP) 安全漏洞 | |
| CVE-2023-20525 | AMD Secure Processor(ASP) 输入验证错误漏洞 | |
| CVE-2023-20528 | AMD System Management Unit(SMU) 输入验证错误漏洞 | |
| CVE-2023-20529 | AMD System Management Unit(SMU) 缓冲区错误漏洞 | |
| CVE-2023-20531 | AMD System Management Unit(SMU) 缓冲区错误漏洞 | |
| CVE-2023-20532 | AMD System Management Unit(SMU) 输入验证错误漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2021-26316
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