Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2021-32537

CVE-2021-32537MEDIUM

Realtek High definition audio Windows driver crashed

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  C  N  N  H    6.5   .0044   36.5     —

AFFECTED
  Product     Versions  Fixed
  HDA driver  8155 –    —

TIMELINE
  May 10  Reserved by twcert
  Jul 7   Published (CNA: twcert)
  Oct 8   EXPLOIT PUBLISHED — CVE-2021-32537 (Realtek HDA driver). Public exploit reference added.

CWE-119 · CNA: twcert · CVSS v3.1 · 2 references · NVD status: Modified

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 10, 2021	Reserved	Reserved by twcert
July 7, 2021	Published	Published (CNA: twcert)
October 8, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2021-32537 (Realtek HDA driver). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Realtek	HDA driver	—	8155	—

Weaknesses

CWE-119

References (2)

http://packetstormsecurity.com/files/163498/Realtek-RTKVHD64.sys-Out-Of-Bounds-Access.html [Exploit, Third Party Advisory, VDB Entry]
https://www.twcert.org.tw/tw/cp-132-4813-7b578-1.html [Third Party Advisory]

Authoritative record: CVE-2021-32537 at cve.org

Vendors: realtek

Weaknesses: CWE-119

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-32537 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.