Security readout for executives and security teams
Plain-English summary
This flaw affects firmware for some Intel PROSet/Wireless Wi-Fi products and some Killer Wi-Fi on Windows 10 and 11. A user who already has high local privileges could trigger a denial of service. The business risk is mainly endpoint availability, not data theft or remote compromise based on the supplied CVE data.
Executive priority
Handle through normal endpoint patch management unless affected devices are in availability-sensitive environments. The vulnerability is not described as remotely exploitable, but it can disrupt impacted systems if a privileged local user can reach it.
Technical view
CVE-2021-0176 is an improper input validation issue in Wi-Fi firmware. CVSS 3.1 is 4.4 with local attack vector, low complexity, high privileges required, no user interaction, unchanged scope, and high availability impact only. The provided CVE data does not enumerate exact affected versions or CPEs.
Likely exposure
Exposure is most likely on endpoints using affected Intel PROSet/Wireless Wi-Fi firmware or Killer Wi-Fi on Windows 10 or 11. Risk is lower where users lack local privileged access and wireless driver or firmware updates are centrally managed.
Exploitation context
The supplied sources do not show active exploitation, and the CVE is not marked in KEV. Exploitation requires local access and high privileges, so this is more relevant to post-compromise disruption, insider misuse, or unstable privileged endpoint conditions than internet-facing attack surface.
Researcher notes
Key gaps are exact affected version ranges and fixed package details, which the CVE record defers to Intel’s advisory. No confidentiality or integrity impact is reported. Validation should focus on adapter model, firmware or driver version, privilege boundary, and denial-of-service exposure.
Mitigation direction
- Review Intel SA-00539 for affected products and versions.
- Apply vendor-approved wireless driver or firmware updates where applicable.
- Prioritize laptops and workstations with Intel or Killer Wi-Fi adapters.
- Restrict local administrator access on managed endpoints.
- Monitor vendor advisories if exact fleet impact is unclear.
Validation and detection
- Inventory Intel PROSet/Wireless and Killer Wi-Fi adapters across endpoints.
- Compare installed driver and firmware versions with Intel SA-00539.
- Confirm affected systems require privileged local access to exercise the issue.
- Verify updated systems report vendor-approved fixed versions.
- Track remediation through endpoint management or asset inventory.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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-20: Exact CWE lookup
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Open ATT&CK lookupCVE-2021-0176 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
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.
CVSS vector scores
1 official scoreWe 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.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H0.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.4MediumVector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00539.htmlCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.