{"id":"CVE-2018-18439","aliases":["DEBIAN-CVE-2018-18439","EUVD-2018-10167","GHSA-vqxq-jmxf-f53r","UBUNTU-CVE-2018-18439"],"status":"published","title":"DENX U-Boot through 2018.09-rc1 has a remotely exploitable buffer overflow via a malicious TFTP...","description":"DENX U-Boot through 2018.09-rc1 has a remotely exploitable buffer overflow via a malicious TFTP server because TFTP traffic is mishandled. Also, local exploitation can occur via a crafted kernel image.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02041,"percentile":0.8128,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119"],"published":"2018-11-20T19:00:00Z","modified":"2026-10-24T10:30:45Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"u-boot","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2023.01+dfsg-2","2023.01+dfsg-2+deb12u1","2023.01+dfsg-2+deb12u2","2023.01+dfsg-2+deb12u3","2023.04+dfsg-1","2023.04~rc2+dfsg-1","2023.04~rc5+dfsg-1","2023.07+dfsg-1","2023.07~rc4+dfsg-1","2023.07~rc5+dfsg-1","2024.01+dfsg-1","2024.01+dfsg-2","2024.01+dfsg-3","2024.01+dfsg-4","2024.01+dfsg-5","2024.01+dfsg-6","2024.01+dfsg-7","2024.01~rc6+dfsg-1","2024.01~rc6+dfsg-2","2025.01-1","2025.01-2","2025.01-3","2025.01-3.1","2025.01-3.2","2026.10~rc5-1"]},{"source":"osv","ecosystem":"Debian:13","package":"u-boot","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2025.01-3","2025.01-3+deb13u1","2025.01-3.1","2025.01-3.2","2026.10~rc5-1"]},{"source":"osv","ecosystem":"Debian:14","package":"u-boot","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2025.01-3","2025.01-3.1","2025.01-3.2","2026.10~rc5-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"u-boot","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2015.04+dfsg1-2ubuntu1","2015.10+dfsg1-2","2015.10+dfsg1-3","2015.10+dfsg1-4","2016.01+dfsg1-1","2016.01+dfsg1-1ubuntu1","2016.01+dfsg1-2ubuntu1","2016.01+dfsg1-2ubuntu2","2016.01+dfsg1-2ubuntu3","2016.01+dfsg1-2ubuntu5","2016.01+dfsg1-2ubuntu5+esm1","2016.01+dfsg1-2ubuntu5+esm2"]}],"products":[{"vendor":"denx","product":"u-boot"}],"references":[{"url":"http://www.openwall.com/lists/oss-security/2018/11/02/2","tags":["mailing-list","x_refsource_MLIST","x_transferred","Exploit","Mailing List","Third Party Advisory","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-18439"},{"url":"https://github.com/advisories/GHSA-vqxq-jmxf-f53r"},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-18439","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-18439","tags":["report"]},{"url":"https://www.openwall.com/lists/oss-security/2018/11/02/2","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-18439","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-18439","description":"DENX U-Boot through 2018.09-rc1 has a remotely exploitable buffer overflow via a malicious TFTP server because TFTP traffic is mishandled. Also, local exploitation can occur via a crafted kernel image.","status":"published","published":"2018-11-20T19:00:00Z","modified":"2024-08-05T11:08:21.931Z","updated_at":"2026-11-02T14:35:11.799349Z"}],"euvd":[{"id":"EUVD-2018-10167","description":"DENX U-Boot through 2018.09-rc1 has a remotely exploitable buffer overflow via a malicious TFTP server because TFTP traffic is mishandled. Also, local exploitation can occur via a crafted kernel image.","status":"published","published":"2018-11-20T19:00:00Z","modified":"2024-08-05T11:08:21Z","updated_at":"2026-11-03T02:39:36.317092Z"}],"ghsa":[{"id":"GHSA-vqxq-jmxf-f53r","title":"DENX U-Boot through 2018.09-rc1 has a remotely exploitable buffer overflow via a malicious TFTP...","description":"DENX U-Boot through 2018.09-rc1 has a remotely exploitable buffer overflow via a malicious TFTP server because TFTP traffic is mishandled. Also, local exploitation can occur via a crafted kernel image.","status":"published","published":"2022-05-14T01:44:07Z","modified":"2023-01-23T21:30:27Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:41:42.013329Z"}],"nvd":[{"id":"CVE-2018-18439","description":"DENX U-Boot through 2018.09-rc1 has a remotely exploitable buffer overflow via a malicious TFTP server because TFTP traffic is mishandled. Also, local exploitation can occur via a crafted kernel image.","status":"published","published":"2018-11-20T19:29:00.62Z","modified":"2026-06-17T01:47:18.337Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:04:48.987926Z"}],"osv":[{"id":"CVE-2018-18439","description":"DENX U-Boot through 2018.09-rc1 has a remotely exploitable buffer overflow via a malicious TFTP server because TFTP traffic is mishandled. Also, local exploitation can occur via a crafted kernel image.","status":"published","published":"2018-11-20T19:29:00.62Z","modified":"2026-10-24T10:30:45.691244329Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:08.834469Z"},{"id":"DEBIAN-CVE-2018-18439","description":"DENX U-Boot through 2018.09-rc1 has a remotely exploitable buffer overflow via a malicious TFTP server because TFTP traffic is mishandled. Also, local exploitation can occur via a crafted kernel image.","status":"published","published":"2018-11-20T19:29:00.62Z","modified":"2026-10-23T18:04:47.211425684Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:30.57382Z"},{"id":"UBUNTU-CVE-2018-18439","description":"DENX U-Boot through 2018.09-rc1 has a remotely exploitable buffer overflow via a malicious TFTP server because TFTP traffic is mishandled. Also, local exploitation can occur via a crafted kernel image.","status":"published","published":"2018-11-20T19:29:00Z","modified":"2026-10-17T12:55:20.966261896Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:54:17.496046Z"}]}}