{"id":"CVE-2026-74220","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-74220","summary":"U-Boot before 2026.10-rc5 contains a buffer overflow in nfs_read_reply() function in net/nfs-common.c that allows attackers to corrupt memory by supplying crafted NFS READ reply lengths.…","details":"U-Boot before 2026.10-rc5 contains a buffer overflow in nfs_read_reply() function in net/nfs-common.c that allows attackers to corrupt memory by supplying crafted NFS READ reply lengths. A malicious NFS server can exploit signed integer handling to bypass length validation and write far past the destination buffer, crashing the bootloader or corrupting memory.","published":"2026-09-29T21:29:22.617Z","modified":"2026-09-29T21:29:22.617Z","cvss":{"score":8.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/u-boot/u-boot/commit/0bbf09859658b8cc9ac13be41af23b516b8ef69a","label":"u-boot/u-boot@0bbf098"},"references":[{"type":"FIX","url":"https://github.com/u-boot/u-boot/commit/0bbf09859658b8cc9ac13be41af23b516b8ef69a"},{"type":"WEB","url":"https://github.com/u-boot/u-boot/blob/v2026.07/net/nfs-common.c#L695"},{"type":"WEB","url":"https://github.com/u-boot/u-boot"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/u-boot-before-2026.10-rc5-buffer-overflow-via-nfs-read-reply"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-29T21:29:22.617Z"}}