What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 4.9 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-07-07 · updated 2026-10-08
• Weakness: CWE-119

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.

Affected products

• Realtek HDA driver: from 8155 through 9150

References

• http://packetstormsecurity.com/files/163498/Realtek-RTKVHD64.sys-Out-Of-Bounds-Access.html
• https://www.twcert.org.tw/tw/cp-132-4813-7b578-1.html
• http://packetstormsecurity.com/files/163498/Realtek-RTKVHD64.sys-Out-Of-Bounds-Access.html
• https://www.twcert.org.tw/tw/cp-132-4813-7b578-1.html

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