# CVE-2026-20739: Intel PROSet/Wireless WiFi Software improper conditions check denial of service

Source: https://junglewise.ai/threats/cve-2026-20739-intel-proset-wireless-wifi-software-improper-conditions-check  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-11. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-20739 · Severity: high · CVSS 7.4 · Published 2026-08-11

Intel PROSet/Wireless WiFi Software is a driver package that manages wireless network connectivity on Windows systems. A flaw in the device driver's condition-checking logic allows a network attacker to crash the system or render WiFi inoperable, disrupting business operations and user productivity. An attacker on the adjacent network (e.g., nearby WiFi range) needs no authentication or user interaction to trigger the vulnerability.

Technologies: [Intel Killer Wi-Fi 6 Ax1650i\/S](https://junglewise.ai/threats/technologies/killer-wi-fi-6-ax1650i-s), [Intel Killer Wi-Fi 6e Ax1675i\/S](https://junglewise.ai/threats/technologies/killer-wi-fi-6e-ax1675i-s), [Intel Killer Wi-Fi 6e Ax1675x\/W](https://junglewise.ai/threats/technologies/killer-wi-fi-6e-ax1675x-w), [Intel Killer Wi-Fi 7 Be1750i\/S](https://junglewise.ai/threats/technologies/killer-wi-fi-7-be1750i-s), [Intel Killer Wi-Fi 7 Be1750x\/W](https://junglewise.ai/threats/technologies/killer-wi-fi-7-be1750x-w), [Intel Killer Wi-Fi 7 Be1775i\/S](https://junglewise.ai/threats/technologies/killer-wi-fi-7-be1775i-s), [Intel PROSet/Wireless WiFi Software](https://junglewise.ai/threats/technologies/proset-wireless-wifi-software), [Intel Proset\](https://junglewise.ai/threats/technologies/proset), [Intel Wi-Fi 6 Ax200](https://junglewise.ai/threats/technologies/wi-fi-6-ax200), [Intel Wi-Fi 6 Ax201](https://junglewise.ai/threats/technologies/wi-fi-6-ax201), [Intel Wi-Fi 6 Ax210](https://junglewise.ai/threats/technologies/wi-fi-6-ax210), [Intel Wi-Fi 6e Ax211](https://junglewise.ai/threats/technologies/wi-fi-6e-ax211), [Intel Wi-Fi 7 Be200](https://junglewise.ai/threats/technologies/wi-fi-7-be200), [Intel Wi-Fi 7 Be201](https://junglewise.ai/threats/technologies/wi-fi-7-be201), [Intel Wi-Fi 7 Be211](https://junglewise.ai/threats/technologies/wi-fi-7-be211), [Intel Wi-Fi 7 Be213](https://junglewise.ai/threats/technologies/wi-fi-7-be213), [Intel Wireless Wifi](https://junglewise.ai/threats/technologies/wireless-wifi), [Intel Wireless-Ac 9461](https://junglewise.ai/threats/technologies/wireless-ac-9461), [Intel Wireless-Ac 9462](https://junglewise.ai/threats/technologies/wireless-ac-9462), [Intel Wireless-Ac 9560](https://junglewise.ai/threats/technologies/wireless-ac-9560). Vendors: [Intel](https://junglewise.ai/threats/vendors/intel).

## Quick answers

**Is CVE-2026-20739 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-20739 being exploited in the wild.

**How severe is CVE-2026-20739?** High severity, with a CVSS score of 7.4, published 11 August 2026.

**Which products and versions are affected?** Intel PROSet/Wireless WiFi Software multiple versions (see Intel INTEL-SA-01422).

**Is there a fix for CVE-2026-20739?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-20739 attacked?** It is attacked from the adjacent network.

**Am I affected by CVE-2026-20739?** Check whether you run Intel Killer Wi-Fi 6 Ax1650i\/S, Intel Killer Wi-Fi 6e Ax1675i\/S, Intel Killer Wi-Fi 6e Ax1675x\/W or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This vulnerability is an improper conditions check in Intel PROSet/Wireless WiFi Software's Ring 2 device driver for Windows. The flaw allows a network adversary to craft specially-formed packets that trigger a denial-of-service condition when processed by the WiFi driver. Attack vector is adjacent network access (AV:A) with no privileges or user interaction required. An attacker can cause system unavailability by exploiting this logic error in the driver's packet-handling code. Patches are available from Intel as part of advisory INTEL-SA-01422.

## Affected products

- Intel PROSet/Wireless WiFi Software multiple versions (see Intel INTEL-SA-01422)

## Timeline

- 2026-08-11: disclosed
- 2026-08-11: advisory: Intel INTEL-SA-01422 published with patch availability

## References

- [https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01422.html](https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01422.html)

## Related threats

- [Intel PROSet/Wireless WiFi Software stack buffer overflow denial of service](https://junglewise.ai/threats/cve-2026-24911-intel-proset-wireless-wifi-software-stack-buffer-overflow-denial)
- [Intel PROSet/Wireless WiFi Software use-after-free in kernel](https://junglewise.ai/threats/cve-2026-24099-intel-proset-wireless-wifi-software-use-after-free-in-kernel)
- [Intel PROSet/Wireless WiFi Software improper buffer restrictions denial of service](https://junglewise.ai/threats/cve-2026-22887-intel-proset-wireless-wifi-software-improper-buffer-restrictions)
- [Intel PROSet/Wireless WiFi Software improper authentication in Ring 2 drivers](https://junglewise.ai/threats/cve-2026-20891-intel-proset-wireless-wifi-software-improper-authentication-in)
- [Intel PROSet/Wireless WiFi Software privilege escalation in Ring 2](https://junglewise.ai/threats/cve-2026-20890-intel-proset-wireless-wifi-software-privilege-escalation-in-ring)