{"id":"CVE-2016-20038","aliases":["DEBIAN-CVE-2016-20038","EUVD-2016-10831","GHSA-wpqm-56h6-gcww","UBUNTU-CVE-2016-20038"],"status":"published","title":"yTree 1.94-1.1 Stack-Based Buffer Overflow","description":"yTree 1.94-1.1 contains a stack-based buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an excessively long argument to the application. Attackers can craft a malicious command-line argument containing shellcode and a return address to overwrite the stack and execute code in the application context.","severity":{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00184,"percentile":0.08094,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2026-03-28T11:58:00Z","modified":"2026-10-17T12:52:42Z","affected":[{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"ytree","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.94-1.1","1.94-1.1build1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"ytree","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.94-2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"ytree","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.99pl1-2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"ytree","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.99pl1-2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"ytree","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.99pl1-2.1","1.99pl1-2.2","1.99pl1-2.2build1","1.99pl1-2.2build2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"ytree","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.99pl1-2.2build2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"ytree","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.99pl1-2.2build2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"ytree","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.99pl1-2.2build2"]}],"products":[{"vendor":"werner","product":"ytree"}],"references":[{"url":"https://www.exploit-db.com/exploits/39406","tags":["exploit","report"]},{"url":"http://www.han.de/~werner/ytree.html","tags":["product","report"]},{"url":"https://www.vulncheck.com/advisories/ytree-stack-based-buffer-overflow","tags":["third-party-advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-20038"},{"url":"https://github.com/advisories/GHSA-wpqm-56h6-gcww"},{"url":"https://security-tracker.debian.org/tracker/CVE-2016-20038","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2016-20038","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2016-20038","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2016-20038","title":"yTree 1.94-1.1 Stack-Based Buffer Overflow","description":"yTree 1.94-1.1 contains a stack-based buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an excessively long argument to the application. Attackers can craft a malicious command-line argument containing shellcode and a return address to overwrite the stack and execute code in the application context.","status":"published","published":"2026-03-28T11:58:00.778Z","modified":"2026-03-30T15:50:05.015Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:33:30.359814Z"}],"euvd":[{"id":"EUVD-2016-10831","description":"yTree 1.94-1.1 contains a stack-based buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an excessively long argument to the application. Attackers can craft a malicious command-line argument containing shellcode and a return address to overwrite the stack and execute code in the application context.","status":"published","published":"2026-03-28T11:58:00Z","modified":"2026-03-30T15:50:05Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T19:25:25.878486Z"}],"ghsa":[{"id":"GHSA-wpqm-56h6-gcww","title":"yTree 1.94-1.1 contains a stack-based buffer overflow vulnerability that allows local attackers...","description":"yTree 1.94-1.1 contains a stack-based buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an excessively long argument to the application. Attackers can craft a malicious command-line argument containing shellcode and a return address to overwrite the stack and execute code in the application context.","status":"published","published":"2026-03-28T12:30:29Z","modified":"2026-03-28T12:30:35Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T15:06:54.610516Z"}],"nvd":[{"id":"CVE-2016-20038","description":"yTree 1.94-1.1 contains a stack-based buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an excessively long argument to the application. Attackers can craft a malicious command-line argument containing shellcode and a return address to overwrite the stack and execute code in the application context.","status":"published","published":"2026-03-28T12:15:59.277Z","modified":"2026-06-17T00:43:08.35Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:03:40.811555Z"}],"osv":[{"id":"DEBIAN-CVE-2016-20038","description":"yTree 1.94-1.1 contains a stack-based buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an excessively long argument to the application. Attackers can craft a malicious command-line argument containing shellcode and a return address to overwrite the stack and execute code in the application context.","status":"withdrawn","published":"2026-03-28T12:15:59.277Z","modified":"2026-04-25T14:01:33.545118Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:27.323751Z"},{"id":"UBUNTU-CVE-2016-20038","description":"yTree 1.94-1.1 contains a stack-based buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an excessively long argument to the application. Attackers can craft a malicious command-line argument containing shellcode and a return address to overwrite the stack and execute code in the application context.","status":"published","published":"2026-03-28T12:15:00Z","modified":"2026-10-17T12:52:42.723825251Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"},{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T15:54:11.492576Z"}]}}