Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2021-26370

Quick assessment

Affected
AMD 2nd Gen AMD EPYC™
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 EPYC是美国AMD公司的一款x86架构服务器微处理器产品线，中文名为“霄龙”，采用Zen微架构。 AMD EPYC UApp/ABL 存在安全漏洞，该漏洞源于SVC_LOAD_FW_IMAGE_BY_INSTANCE和SVC_LOAD_BINARY_BY_ATTRIB对目标地址验证不当。攻击者利用该漏洞覆盖任意加载程序的内存，从而损失完整性和可用性。

AI Predicted 7.8 Difficulty: Trivial EPSS 0.23% · P13
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2021-26370

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Improper validation of destination address in SVC_LOAD_FW_IMAGE_BY_INSTANCE and SVC_LOAD_BINARY_BY_ATTRIB in a malicious UApp or ABL may allow an attacker to overwrite arbitrary bootloader memory with SPI ROM contents resulting in a loss of integrity and availability.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
AMD EPYC UApp/ABL 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AMD EPYC是美国AMD公司的一款x86架构服务器微处理器产品线，中文名为“霄龙”，采用Zen微架构。 AMD EPYC UApp/ABL 存在安全漏洞，该漏洞源于SVC_LOAD_FW_IMAGE_BY_INSTANCE和SVC_LOAD_BINARY_BY_ATTRIB对目标地址验证不当。攻击者利用该漏洞覆盖任意加载程序的内存，从而损失完整性和可用性。
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 2nd Gen AMD EPYC™ unspecified ~ RomePI-SP3_1.0.0.C -
AMD 3rd Gen AMD EPYC™ unspecified ~ MilanPI-SP3_1.0.0.4 -

II. Public POCs for CVE-2021-26370

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-26370

请登录查看更多情报信息。

Other References for CVE-2021-26370 (1)

Same Patch Batch · AMD · 2022-05-10 · 8 CVEs total

CVE-2021-26353 AMD EPYC DRTM UApp 安全漏洞
CVE-2021-46771 AMD Secure Processor 安全漏洞
CVE-2021-26324 AMD EPYC SEV-ES TMR 安全漏洞
CVE-2021-26332 AMD Secure Encrypted Virtualization 安全漏洞
CVE-2021-26352 AMD System Management Unit 缓冲区错误漏洞
CVE-2021-26390 AMD EPYC 安全漏洞
CVE-2021-26408 AMD SEV-legacy 安全漏洞

IV. Related Vulnerabilities

Same product: 2nd Gen AMD EPYC™
Same vendor: AMD
Same weakness: CWE-20

V. Comments for CVE-2021-26370

No comments yet

Leave a comment