{"cve":"CVE-2022-2347","nvd":{"published":"2022-09-23T13:15:10.133","modified":"2026-06-17T04:41:44.320","status":"Modified","description":"There exists an unchecked length field in UBoot. The U-Boot DFU implementation does not bound the length field in USB DFU download setup packets, and it does not verify that the transfer direction corresponds to the specified command. Consequently, if a physical attacker crafts a USB DFU download setup packet with a `wLength` greater than 4096 bytes, they can write beyond the heap-allocated request buffer.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","score":7.1},"cwes":["CWE-787","CWE-122"],"references":["https://seclists.org/oss-sec/2022/q3/41","https://lists.debian.org/debian-lts-announce/2025/05/msg00001.html","https://seclists.org/oss-sec/2022/q3/41","https://cert-portal.siemens.com/productcert/html/ssa-577017.html"],"products":["denx:u-boot"],"source":"nvd","synced_at":"2026-10-19T21:36:05.460296998+00:00"},"epss":{"cve":"CVE-2022-2347","score":0.00577,"percentile":0.47581,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}