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CVE Record

CVE-2021-33113: Improper input validation for some Intel(R) PROSet/Wireless WiFi in multiple operating systems and Killer(T...

Improper input validation for some Intel(R) PROSet/Wireless WiFi in multiple operating systems and Killer(TM) WiFi in Windows 10 and 11 may allow an unauthenticated user to potentially enable denial of service or information disclosure via adjacent access.

HighCVSS 8.1Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This vulnerability affects Intel PROSet/Wireless WiFi and Killer WiFi software on some systems. An attacker nearby on the same adjacent network path could trigger a denial of service or expose information without authentication or user interaction. Business urgency is high for laptops and endpoints using these wireless components.

Executive priority

Treat as a high-priority endpoint remediation item, especially for mobile workforces. The attack is proximity-limited, but the potential confidentiality and availability impacts are both high.

Technical view

CVE-2021-33113 is improper input validation, CWE-20, in some Intel PROSet/Wireless WiFi across multiple operating systems and Killer WiFi on Windows 10 and 11. CVSS 3.1 is 8.1 with adjacent attack vector, low complexity, no privileges, no user interaction, high confidentiality impact, and high availability impact.

Likely exposure

Exposure is most likely on endpoint fleets, especially laptops or workstations using affected Intel PROSet/Wireless WiFi or Killer WiFi components. The provided sources do not list exact affected versions, so version confirmation must come from Intel SA-00582.

Exploitation context

The source bundle does not show CISA KEV listing or any cited evidence of active exploitation. The CVSS vector indicates exploitation requires adjacent access, not internet-wide reach, but no authentication or user interaction is required.

Researcher notes

Evidence is limited to the CVE metadata and Intel advisory reference. Exact affected versions, fixed versions, and operational workarounds are not included in the provided bundle and should not be inferred.

Mitigation direction

  • Review Intel SA-00582 for affected versions and vendor guidance.
  • Update Intel PROSet/Wireless WiFi and Killer WiFi software where applicable.
  • Prioritize mobile endpoints exposed to untrusted wireless environments.
  • Use vendor guidance if updates are unavailable for a specific platform.

Validation and detection

  • Inventory endpoints with Intel PROSet/Wireless WiFi or Killer WiFi components.
  • Compare installed versions against Intel SA-00582 affected version data.
  • Confirm Windows 10 and 11 systems using Killer WiFi are assessed.
  • Verify wireless driver or software updates are deployed successfully.
Prepared
Confidence
medium
Sources
3

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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-20: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2021-33113 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
High
CVSS
8.1 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/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
8.1CVSS 3.1HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H2.85.2Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

8.1High
CVSS 3.1 vector shape for CVE-2021-33113Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/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 in multiple operating systems and Killer(TM) WiFi in Windows 10 and 11See referencesListed
Weakness

CWE details

CWE-20

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

CWE-20 · source CWE mapping

Improper Input Validation

Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligenceSame-CWE CVEs