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CVE-2021-32537— Realtek High definition audio Windows driver crashed

Quick assessment

Affected
Realtek HDA driver
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Realtek HAD是中国瑞昱（Realtek）公司的一款高清音频驱动程序包。 Realtek HAD 存在缓冲区错误漏洞，该漏洞源于Realtek HAD包含一个驱动程序崩溃漏洞。攻击者可利用该漏洞在用户模式下向内核驱动程序发送一个特殊字符串，内核驱动程序由于意外命令导致系统崩溃。

CVSS 6.5 · Medium EPSS 0.44% · P36

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth
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I. Basic Information for CVE-2021-32537

Vulnerability Information
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Vulnerability Title
Realtek High definition audio Windows driver crashed
Source: CVE Program / CVE List V5
Vulnerability Description
Realtek HAD contains a driver crashed vulnerability which allows local side attackers to send a special string to the kernel driver in a user’s mode. Due to unexpected commands, the kernel driver will cause the system crashed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Realtek HAD 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Realtek HAD是中国瑞昱（Realtek）公司的一款高清音频驱动程序包。 Realtek HAD 存在缓冲区错误漏洞，该漏洞源于Realtek HAD包含一个驱动程序崩溃漏洞。攻击者可利用该漏洞在用户模式下向内核驱动程序发送一个特殊字符串，内核驱动程序由于意外命令导致系统崩溃。
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
Realtek HDA driver 8155 ~ 9150 -

II. Public POCs for CVE-2021-32537

# POC Description Source Link Shenlong Link
1 PoC for CVE-2021-32537: an out-of-bounds memory access that leads to pool corruption in the Windows kernel. https://github.com/0vercl0k/CVE-2021-32537 POC Details
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III. Intelligence Information for CVE-2021-32537

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Other References for CVE-2021-32537 (1)

IV. Related Vulnerabilities

Same vendor: Realtek

V. Comments for CVE-2021-32537

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