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CVE-2021-33626

Quick assessment

Affected
n/a n/a
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.

Insyde InsydeH2O是中国台湾系微（Insyde）公司的一个 C 语言源，它实现了新技术“EFI/UEFI”规范，旨在取代传统的 BIOS（基本输入/输出系统）。 Insyde InsydeH2O 5.x 存在安全漏洞，该漏洞源于SMM驱动程序没有正确验证CommBuffer和CommBufferSize参数，允许攻击者损坏固件或操作系统内存。

AI Predicted 8.2 Difficulty: Hard EPSS 0.31% · P24

Affected Version Matrix 1

VendorProduct Version RangeStatus
n/a n/a n/a affected
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I. Basic Information for CVE-2021-33626

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability exists in SMM (System Management Mode) branch that registers a SWSMI handler that does not sufficiently check or validate the allocated buffer pointer(QWORD values for CommBuffer). This can be used by an attacker to corrupt data in SMRAM memory and even lead to 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
Insyde InsydeH2O 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Insyde InsydeH2O是中国台湾系微（Insyde）公司的一个 C 语言源，它实现了新技术“EFI/UEFI”规范，旨在取代传统的 BIOS（基本输入/输出系统）。 Insyde InsydeH2O 5.x 存在安全漏洞，该漏洞源于SMM驱动程序没有正确验证CommBuffer和CommBufferSize参数，允许攻击者损坏固件或操作系统内存。
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
- n/a n/a -

II. Public POCs for CVE-2021-33626

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III. Intelligence Information for CVE-2021-33626

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Vendor Advisories for CVE-2021-33626 (2)

Vendor Pages for CVE-2021-33626 (1)

Other References for CVE-2021-33626 (1)

Same Patch Batch · n/a · 2021-10-01 · 53 CVEs total

CVE-2021-40968 spotweb 跨站脚本漏洞
CVE-2021-41459 Gpac MP4Box 缓冲区错误漏洞
CVE-2021-41457 Gpac MP4Box 缓冲区错误漏洞
CVE-2021-41648 PuneethReddyHc Online Shopping System Advanced SQL注入漏洞
CVE-2021-35297 Scalabium dBase Viewer 安全漏洞
CVE-2021-40960 Galera WebTemplate 路径遍历漏洞
CVE-2021-41649 PuneethReddyHc Online Shopping System Advanced SQL注入漏洞
CVE-2021-41456 Gpac MP4Box 缓冲区错误漏洞
CVE-2021-40927 Spotify-for-Alfred 跨站脚本漏洞
CVE-2021-40926 GetId3 跨站脚本漏洞
CVE-2021-40924 bugs 跨站脚本漏洞
CVE-2021-40928 FlexTV beta 跨站脚本漏洞
CVE-2021-40970 spotweb 跨站脚本漏洞
CVE-2021-40969 spotweb 跨站脚本漏洞
CVE-2021-40972 spotweb 跨站脚本漏洞
CVE-2021-40971 spotweb 跨站脚本漏洞
CVE-2021-40975 Ecommerce-CodeIgniter-Bootstrap 跨站脚本漏洞
CVE-2021-40973 spotweb 跨站脚本漏洞
CVE-2021-41461 Portlandlabs Concrete5 跨站脚本漏洞
CVE-2021-41463 Portlandlabs Concrete5 跨站脚本漏洞

Showing top 20 of 53 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2021-33626

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