{"id":"CVE-2026-71974","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-71974","generatedAt":"2026-10-28T06:00:02.125Z","title":"U-Boot before 2026.10-rc3 contains an out-of-bounds write vulnerability in read_slotted_partition() that fails to validate image size against partition bounds.","description":"U-Boot before 2026.10-rc3 contains an out-of-bounds write vulnerability in read_slotted_partition() that fails to validate image size against partition bounds. Attackers with physical access can supply crafted boot media with oversized headers to write past the load buffer into bootloader memory on devices without Android Verified Boot protection.","published":"2026-09-29T22:18:22.000Z","lastModified":"2026-09-30T20:17:34.000Z","status":"Awaiting Analysis","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":4.3,"severity":"MEDIUM","vector":"CVSS:4.0/AV:P/AC:L/AT:P/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/M"},"cwe":["CWE-787"],"affected":[],"epss":{"score":0.00177,"percentile":0.07139,"date":"2026-10-27","history":[{"date":"2026-09-30","score":0.00177,"percentile":0.06509}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.18%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-29T22:18:22.000Z","detail":{"score":"4.3","severity":"MEDIUM","publishedAt":"2026-09-29T22:18:22.250Z"},"summary":"New CVE, medium severity (CVSS 4.3)."}],"references":[{"url":"https://github.com/u-boot/u-boot","source":"disclosure@vulncheck.com"},{"url":"https://github.com/u-boot/u-boot/blob/v2026.07/boot/bootmeth_android.c#L356","source":"disclosure@vulncheck.com"},{"url":"https://github.com/u-boot/u-boot/commit/35432ef6fe2c79ab72709966e64815a45eb55c76","source":"disclosure@vulncheck.com"},{"url":"https://patch.msgid.link/20260729-b4-android-bootmeth-oob-v1-1-31c3450ae0be@byteray.co.uk","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/u-boot-before-2026.10-rc3-out-of-bounds-write-via-android-bootmeth-partition-read","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-71974","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}