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I. Basic Information for CVE-2021-26402
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
Insufficient bounds checking in ASP (AMD Secure Processor) firmware while handling BIOS mailbox commands, may allow an attacker to write partially-controlled data out-of-bounds to SMM or SEV-ES regions which may lead to a potential loss of integrity and availability.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
AMD Secure Processor 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AMD Secure Processor(ASP)是美国超威半导体(AMD)公司的一款独立的 ARM Coretex-A5 芯片。 ASP (AMD Secure Processor)存在安全漏洞,该漏洞源于边界检查不足。攻击者利用该漏洞将部分控制的数据写入SMM或SEV-ES区域,从而导致潜在的完整性和可用性损失。
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
VendorProductAffected VersionsCPESubscribe
AMD2nd Gen EPYC Various -
AMD3rd Gen EPYC various -
II. Public POCs for CVE-2021-26402
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III. Intelligence Information for CVE-2021-26402
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IV. Related Vulnerabilities
V. Comments for CVE-2021-26402

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