Security readout for executives and security teams
Plain-English summary
CVE-2021-0161 is a local privilege escalation issue in Intel PROSet/Wireless Wi-Fi firmware across multiple operating systems and Killer Wi-Fi on Windows 10 and 11. It is not described as remotely exploitable. The main business risk is an attacker with an already privileged local foothold gaining broader control on affected endpoints.
Executive priority
Treat this as a moderate-priority endpoint hardening and patch-management item. It does not warrant emergency internet-edge response from the provided evidence, but it matters where attackers could already have privileged local access.
Technical view
The issue is improper input validation, mapped to CWE-20, in Wi-Fi firmware. The CVSS 3.1 score is 6.7 with local attack vector, low complexity, high privileges required, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely on endpoints using Intel PROSet/Wireless Wi-Fi or Killer Wi-Fi on Windows 10 and 11. The source bundle does not provide exact affected versions or CPEs, so asset matching requires Intel advisory review.
Exploitation context
The bundle does not show CISA KEV listing or cited evidence of active exploitation. Exploitation requires local access and high privileges, so this is mainly a post-compromise escalation concern, not an internet-facing entry point.
Researcher notes
NVD-style details indicate AV:L, PR:H, UI:N, and high CIA impact. The provided bundle lacks exact affected and fixed versions, exploit details, and CPEs. Use Intel SA-00539 as the controlling source for version validation.
Mitigation direction
- Review Intel SA-00539 for affected versions and vendor-recommended updates.
- Inventory endpoints with Intel PROSet/Wireless Wi-Fi or Killer Wi-Fi components.
- Prioritize updates on administrator workstations and high-value endpoints.
- Reduce unnecessary local administrator access where operationally feasible.
- Monitor Intel guidance for any revised affected-version or remediation details.
Validation and detection
- Compare installed Wi-Fi driver and firmware versions against Intel SA-00539.
- Confirm whether Killer Wi-Fi is present on Windows 10 or 11 systems.
- Check endpoint inventories for Intel PROSet/Wireless Wi-Fi across operating systems.
- Verify local administrator group membership on exposed endpoints.
- Document any systems awaiting vendor-confirmed remediation.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
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 lookupCVE-2021-0161 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
- 6.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/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:H/I:H/A:H0.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.7MediumVector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/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.