# CVE-2026-20739: Denial of service in Intel(R) PROSet/Wireless WiFi Software for Windows

> A network adversary can cause a denial of service in Intel PROSet/Wireless WiFi Software for Windows via adjacent access without user interaction.

- **Severity:** High 7.1 (`CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Aug 2026
- **Updated:** 12 Aug 2026
- **Also known as:** GHSA-hxjp-p45h-c7gv

## What is CVE-2026-20739?

CVE-2026-20739 is a high-severity denial of service vulnerability in Intel Proset\/Wireless Wifi, published on 11 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Improper conditions check for some Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 2: Device Drivers may allow a denial of service. Network adversary with an unauthenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via adjacent access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (low) impacts.

Weakness: CWE-754 (Improper Check for Unusual or Exceptional Conditions)

## Which versions are affected by CVE-2026-20739?

It affects 1 product.


Products: Intel Proset\/Wireless Wifi.

## How do I fix CVE-2026-20739?

No fix has been published for CVE-2026-20739 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-20739 being exploited?

There is no known exploitation of CVE-2026-20739 in the wild and no public exploit code.

## Other vulnerabilities in Intel Proset\/Wireless Wifi

- [CVE-2020-12313](https://insights.sbomify.com/CVE-2020-12313/): Privilege escalation in Intel(R) PROSet/Wireless WiFi (high 8.8)
- [CVE-2026-20789](https://insights.sbomify.com/CVE-2026-20789/): Privilege escalation in Intel(R) PROSet/Wireless WiFi Software for Windows (high 8.4)
- [CVE-2026-20727](https://insights.sbomify.com/CVE-2026-20727/): Null dereference in Intel(R) PROSet/Wireless WiFi Software for Windows (high 8.3)
- [CVE-2026-20741](https://insights.sbomify.com/CVE-2026-20741/): Missing authorization in Intel(R) PROSet/Wireless WiFi Software (high 8.3)
- [CVE-2026-20776](https://insights.sbomify.com/CVE-2026-20776/): Denial of service in Intel(R) PROSet/Wireless WiFi Software (high 8.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-20739 and fix it if it is affected.

What it is: CVE-2026-20739 is a high-severity denial of service vulnerability in Intel Proset\/Wireless Wifi, published on 11 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-20739 in the wild and no public exploit code.

Affected product: Intel Proset\/Wireless Wifi. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-20739/ (Markdown: https://insights.sbomify.com/CVE-2026-20739/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-20739
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-20739
- OSV: https://osv.dev/vulnerability/CVE-2026-20739

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-20739/
Summaries are generated and may contain mistakes; the official description above is the record.