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CVE Record

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

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.

MediumCVSS 6.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

This vulnerability can let a local, low-privileged Windows user crash systems running the affected Realtek High Definition Audio driver. It is mainly a business continuity and endpoint stability issue, not a data theft issue based on the supplied CVSS metrics. Exposure is most likely on Windows endpoints or images that include Realtek HDA driver version 8155. The bundle does not identify additional Realtek driver branches, OEM packages, or operating system versions. Handle as a moderate-priority endpoint stability issue. It does not indicate remote compromise or data exposure in the supplied sources, but affected devices could be forced to crash by local users. Mitigation focus: Inventory Windows endpoints for Realtek HDA driver version 8155.; Check Realtek or TWCERT guidance for corrected driver packages.; Prioritize updates on shared workstations, kiosks, and high-availability endpoints..

Prepared

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2021-32537 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
6.5CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H24Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.5Medium
CVSS 3.1 vector shape for CVE-2021-32537Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
RealtekHDA driver8155Listed
Weakness

CWE details

No CWE listed

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