CVE-2026-20891

Stack-based buffer overflow in Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 0: Kernel may allow denial of service. An unprivileged software adversary with an unauthenticated user and low complexity attack may enable DoS. This may occur via adjacent access without user interaction. Availability impact is high.

Improper buffer restrictions in Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 0: Kernel may allow denial of service. An unprivileged software adversary with an unauthenticated user and low complexity attack may enable DoS. This may occur via adjacent access without user interaction. Integrity impact is low, availability high.

Improper privilege management in Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 2: Privileged Process may allow privilege escalation. An unprivileged software adversary with an unauthenticated user and high complexity attack may enable escalation. This may occur via local access without user interaction. Confidentiality and integrity impact are low, availability high.

Out-of-bounds write in Intel(R) PROSet/Wireless WiFi Software for Windows may allow a denial of service. An attacker with an unauthenticated user and a low complexity attack may cause a denial of service. The attack requires adjacent access, passive user interaction, and may impact availability.

Null pointer dereference in Intel PROSet/Wireless WiFi drivers for Windows may lead to denial of service. The attack requires network access and low complexity, with no user interaction. The impact on system availability is high.

Improper buffer restrictions in Intel PROSet/Wireless WiFi drivers for Windows may lead to denial of service. The attack requires network access and low complexity, with no user interaction. The impact on system availability is high.

Improper access control in Intel PROSet/Wireless WiFi drivers for Windows may allow privilege escalation. The attack requires local access and low complexity, with no user interaction. The impact on confidentiality, integrity, and availability is low, low, and high, respectively.

Null pointer dereference in Intel PROSet/Wireless WiFi drivers for Windows may lead to denial of service. The attack requires network access and low complexity, with no user interaction. The impact on system availability is high.

Uncontrolled resource consumption in Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 2: Device Drivers may allow a denial of service. The attack requires local access, low complexity, and no user interaction. The vulnerability impacts system availability (high), but not confidentiality or integrity.

Out-of-bounds read in Intel PROSet/Wireless WiFi drivers for Windows (Ring 0) may lead to denial of service. The attack requires network access and high complexity, with no user interaction. The impact on system availability is high.