Out-of-bounds read in Intel products - CVE-2026-20778

Vulnerability identifier: #VU143633

CSH Severity: Medium

CVSS v4: 5.9 [CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-20778

CWE-ID: CWE-125

Exploitation vector: Adjecent network

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition. A remote attacker on the local network can trigger an out-of-bounds read error and cause a denial of service condition on the system.

Intel Wireless-AC 9461
Intel Wireless-AC 9462
Intel Wireless-AC 9560
Intel Wi-Fi 6 AX200
Intel Wi-Fi 6 AX201 & Killer 1650i/s2
Intel Wi-Fi 6E AX210 & Killer 1675x/w
Intel Wi-Fi 6E AX211 & Killer 1675i/s2
Intel Wi-Fi 7 BE200 & Killer 1750x/w2
Intel Wi-Fi 7 BE201 & Killer 1750i/s2
Intel Wi-Fi 7 BE211 & Killer 1775i/s
Intel Wi-Fi 7 BE213

Install updates from vendor's website.

Intel Wireless-AC 9461 - update to 24.30
Intel Wireless-AC 9462 - update to 24.30
Intel Wireless-AC 9560 - update to 24.30
Intel Wi-Fi 6 AX200 - update to 24.30
Intel Wi-Fi 6 AX201 & Killer 1650i/s2 - update to 24.30
Intel Wi-Fi 6E AX210 & Killer 1675x/w - update to 24.30
Intel Wi-Fi 6E AX211 & Killer 1675i/s2 - update to 24.30
Intel Wi-Fi 7 BE200 & Killer 1750x/w2 - update to 24.30
Intel Wi-Fi 7 BE201 & Killer 1750i/s2 - update to 24.30
Intel Wi-Fi 7 BE211 & Killer 1775i/s - update to 24.30
Intel Wi-Fi 7 BE213 - update to 24.30

• https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01468.html

• Multiple vulnerabilities in Intel PROSet/Wireless WiFi