{"id":"CVE-2026-74220","published":"2026-09-29T22:18:33.317","lastModified":"2026-09-29T22:18:33.317","description":"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.","cvssScore":8.2,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","cwes":["CWE-195"],"vendors":[],"products":[],"references":[{"url":"https://github.com/u-boot/u-boot","tags":[]},{"url":"https://github.com/u-boot/u-boot/blob/v2026.07/net/nfs-common.c#L695","tags":[]},{"url":"https://github.com/u-boot/u-boot/commit/0bbf09859658b8cc9ac13be41af23b516b8ef69a","tags":[]},{"url":"https://www.vulncheck.com/advisories/u-boot-before-2026.10-rc5-buffer-overflow-via-nfs-read-reply","tags":[]}],"exploitRefs":[{"url":"https://github.com/u-boot/u-boot","tags":[]},{"url":"https://github.com/u-boot/u-boot/blob/v2026.07/net/nfs-common.c#L695","tags":[]},{"url":"https://github.com/u-boot/u-boot/commit/0bbf09859658b8cc9ac13be41af23b516b8ef69a","tags":[]}],"hasPoc":true,"ai":null}