CVE-2026-74225
HIGH
NVD
CVSS Score
7.1
Severity
HIGH
Published
Sep 29, 2026
Vendor
unknown
Description
U-Boot before 2026.10-rc5 contains out-of-bounds memory access in dhcp6_parse_options() that fails to validate SERVERID and CLIENTID option lengths from DHCPv6 packets. Attackers on the local network can send crafted DHCPv6 ADVERTISE or REPLY packets during netboot to corrupt memory and crash the bootloader.