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CVE Record

CVE-2021-34174: A vulnerability exists in Broadcom BCM4352 and BCM43684 chips.

A vulnerability exists in Broadcom BCM4352 and BCM43684 chips. Any wireless router using BCM4352 and BCM43684 will be affected, such as ASUS AX6100. An attacker may cause a Denial of Service (DoS) to any device connected to BCM4352 or BCM43684 routers via an association or reassociation frame.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This CVE describes a denial-of-service issue in Broadcom BCM4352 and BCM43684 wireless chips. Affected routers may be disrupted by association or reassociation frames, potentially interrupting devices connected through those routers. The public record names ASUS AX6100 as an example, but does not provide a complete affected-product list.

Executive priority

Treat this as an availability risk for affected wireless environments, not a confirmed data-breach issue. Priority should depend on whether critical staff, sites, or operations rely on routers using these Broadcom chipsets. Evidence is too incomplete to assign emergency priority from the public record alone.

Technical view

The CVE states that wireless routers using Broadcom BCM4352 or BCM43684 chips are affected. The trigger is an association or reassociation frame, causing DoS against devices connected to those routers. No CVSS score, CWE, fixed versions, complete CPE data, or vendor mitigation details are provided in the supplied sources.

Likely exposure

Exposure is most relevant where organizations operate wireless routers using BCM4352 or BCM43684 chipsets. The bundle gives ASUS AX6100 only as an example, so asset validation must be chipset-based, not limited to that model.

Exploitation context

The supplied sources do not show active exploitation, and CISA KEV status is false. Because the trigger is a wireless association or reassociation frame, exploitation appears local wireless in nature rather than internet-routed, but the source detail is limited.

Researcher notes

Public data is sparse: affected vendor/product fields are not populated, severity is unknown, and references point to a researcher and OWFuzz repository rather than a detailed vendor advisory. Do not assume all Broadcom wireless chips are affected; validate only BCM4352 and BCM43684 based on the CVE text.

Mitigation direction

  • Inventory wireless routers for Broadcom BCM4352 or BCM43684 chipsets, including ASUS AX6100-class devices.
  • Check router and chipset vendor advisories for firmware updates or configuration guidance.
  • Prioritize firmware maintenance or replacement for business-critical wireless access points.
  • Monitor wireless infrastructure for repeated association or reassociation anomalies.
  • Reduce reliance on affected routers in critical operational paths where possible.

Validation and detection

  • Confirm whether deployed router models contain BCM4352 or BCM43684 chips.
  • Review vendor firmware release notes for this CVE or matching DoS descriptions.
  • Check wireless logs for unexplained client disruption around association events.
  • Validate suspected devices in a controlled lab, not on production wireless networks.
Prepared
Confidence
low
Sources
4

Public sources used

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

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2021-34174 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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.

0CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.