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CVE Record

CVE-2021-44545: Improper input validation for some Intel(R) PROSet/Wireless WiFi and Killer(TM) WiFi products may allow an...

Improper input validation for some Intel(R) PROSet/Wireless WiFi and Killer(TM) WiFi products may allow an unauthenticated user to potentially enable denial of service via adjacent access.

MediumCVSS 6.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This issue can let someone nearby disrupt WiFi availability on some Intel PROSet/Wireless WiFi and Killer WiFi products. It is not described as data theft or system takeover. Business urgency is moderate because exploitation requires adjacent access, but impacted laptops or workstations could lose connectivity.

Executive priority

Treat as a normal-priority endpoint firmware and driver update, with faster handling for mobile users and dense office environments. The known impact is service disruption, not confidentiality or integrity compromise.

Technical view

CVE-2021-44545 is CWE-20 improper input validation affecting some Intel PROSet/Wireless WiFi and Killer WiFi products. CVSS 3.1 is 6.5: adjacent attack vector, low complexity, no privileges, no user interaction, unchanged scope, and high availability impact only.

Likely exposure

Exposure is most likely on endpoints using affected Intel PROSet/Wireless WiFi or Killer WiFi products. The source bundle does not include exact affected versions, so version mapping must come from Intel’s advisory and relevant OS distribution guidance.

Exploitation context

CISA KEV status is false in the provided bundle, and no cited source states active exploitation. The CVSS vector indicates an unauthenticated attacker with adjacent access could cause denial of service without user interaction.

Researcher notes

The evidence identifies product families, CWE-20, adjacent access, and denial-of-service impact. Exact affected and fixed versions are not present in the bundle; avoid assuming product coverage beyond Intel’s advisory and Debian’s referenced firmware update.

Mitigation direction

  • Review Intel-SA-00621 for affected versions and vendor update guidance.
  • Update affected Intel or Killer WiFi drivers and firmware through approved vendor channels.
  • For Debian LTS systems, review DLA 3380-1 firmware-nonfree update applicability.
  • Prioritize shared offices, public WiFi areas, and high-value mobile endpoints.
  • Disable unused wireless interfaces where operationally feasible.

Validation and detection

  • Inventory endpoints with Intel PROSet/Wireless WiFi or Killer WiFi hardware.
  • Compare installed driver and firmware versions against Intel-SA-00621.
  • Check Debian LTS firmware-nonfree package status where applicable.
  • Confirm endpoint management reports successful driver or firmware deployment.
  • Review wireless availability incidents for affected device patterns.
Prepared
Confidence
medium
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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cwe · low confidence lookup

CWE-20: Exact CWE lookup

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cve · low confidence lookup

CVE-2021-44545 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:A/AC:L/PR:N/UI:N/S:U/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
3Source 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:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H2.83.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.5Medium
CVSS 3.1 vector shape for CVE-2021-44545Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/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
n/aIntel(R) PROSet/Wireless WiFi and Killer(TM) WiFi productsSee referencesListed
Weakness

CWE details

CWE-20

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