{"id":"CVE-2021-32537","title":"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","summary":"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.","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","cwe":["CWE-119"],"vendor":"realtek","product":"hda_driver","affected":["hda_driver >= 8155, <= 9150"],"published":"2021-07-07","updated":"2026-10-08","sourceUpdated":"2026-10-08T22:17:09.453","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2021-32537","references":[{"url":"http://packetstormsecurity.com/files/163498/Realtek-RTKVHD64.sys-Out-Of-Bounds-Access.html","label":"twcert@cert.org.tw"},{"url":"https://www.twcert.org.tw/tw/cp-132-4813-7b578-1.html","label":"twcert@cert.org.tw"},{"url":"http://packetstormsecurity.com/files/163498/Realtek-RTKVHD64.sys-Out-Of-Bounds-Access.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.twcert.org.tw/tw/cp-132-4813-7b578-1.html","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd","exploit-available"],"epss":0.00436,"epssPercentile":0.35904,"exploits":{"github":1,"githubRepos":["https://github.com/0vercl0k/CVE-2021-32537"],"checkedAt":"2026-10-08T23:17:21.753Z"},"exploitAvailable":true,"ingestedAt":"2026-10-08T23:16:47.320Z","slug":"CVE-2021-32537","body":"## Overview\n\nRealtek 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.\n\n## Affected\n\n- `hda_driver >= 8155, <= 9150`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}