# CVE-2026-20886: Intel PROSet/Wireless WiFi Software out-of-bounds write in device driver

Source: https://junglewise.ai/threats/cve-2026-20886-intel-proset-wireless-wifi-software-out-of-bounds-write-in-device  
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-2026-20886 · Severity: high · CVSS 7.4 · Published 2026-08-11

Intel's PROSet/Wireless WiFi Software for Windows contains a memory safety vulnerability in its Ring 2 device driver that allows a network attacker to cause system instability or crashes. An attacker on the local network can trigger this vulnerability without authentication or user interaction, leading to denial of service that impacts system availability and potentially causes data loss or downtime.

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\](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-2026-20886 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-20886 being exploited in the wild.

**How severe is CVE-2026-20886?** High severity, with a CVSS score of 7.4, published 11 August 2026.

**Which products and versions are affected?** Intel PROSet/Wireless WiFi Software for Windows unspecified.

**Is there a fix for CVE-2026-20886?** 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-2026-20886 attacked?** It is attacked from the adjacent network, in device firmware.

**Am I affected by CVE-2026-20886?** 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

CVE-2026-20886 is an out-of-bounds write vulnerability in Intel PROSet/Wireless WiFi Software's Ring 2 device driver for Windows. The flaw exists in the wireless driver's packet processing logic, allowing adjacent network attackers to send specially crafted WiFi frames that trigger the out-of-bounds memory write. The attack requires no authentication, no special privileges, and no user interaction, making it exploitable by any device on the local network segment. Successful exploitation results in denial of service through system crash or instability; the vulnerability has low potential impact on data integrity and confidentiality. Intel has released software updates to patch this and related vulnerabilities in the PROSet/Wireless WiFi Software suite.

## Affected products

- Intel PROSet/Wireless WiFi Software for Windows unspecified

## Timeline

- 2026-08-11: disclosed

## 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 heap overflow in kernel](https://junglewise.ai/threats/cve-2026-42956-out-of-bounds-write-for-some-intel-r-wireless-bluetooth-r-within)
- [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)