Name: CVE-2026-74225: Out-of-bounds Write
Creator: Rapid7
Published: 2026-09-29T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-74225, CWE-787, CVSS 7.1, EPSS 0.00232

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.

CVSS Details

CVSS 4.0 Base Score: 7.1 (HIGH)
CVSS 4.0 Vector: (CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
CVSS 3.1 Base Score: 7.1
CVSS 3.1 Vector: (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Ubuntu	—	Upgrade u-boot-tools (Ubuntu Pro)Upgrade u-boot-imx (Ubuntu Pro)Upgrade u-boot-qemuUpgrade u-boot-qemu (Ubuntu Pro)Upgrade u-boot-imxUpgrade u-boot-tools	Oct 15, 2026	Oct 14, 2026

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CVSS Details

Covered by Rapid7

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