{"id":"CVE-2016-6253","url":"https://www.cyber-defence.io/tools/cve/CVE-2016-6253","generatedAt":"2026-10-27T19:50:32.270Z","title":"mail.local in NetBSD versions 6.0 through 6.0.6, 6.1 through 6.1.5, and 7.0 allows local users to change ownership of or append data to arbitrary files on the target system via a symlink attack on the user mailbox.","description":"mail.local in NetBSD versions 6.0 through 6.0.6, 6.1 through 6.1.5, and 7.0 allows local users to change ownership of or append data to arbitrary files on the target system via a symlink attack on the user mailbox.","published":"2017-01-20T15:59:01.000Z","lastModified":"2026-06-17T00:50:42.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":7.8,"severity":"HIGH","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-59"],"affected":["netbsd/netbsd"],"epss":{"score":0.03534,"percentile":0.89182,"date":"2026-10-26","history":[{"date":"2026-09-21","score":0.08398,"percentile":0.94805},{"date":"2026-09-22","score":0.03563,"percentile":0.88828}]},"kev":{"listed":false},"exploits":{"count":2,"verified":true,"firstPublished":"2016-07-21","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":40385,"kind":"exploit","title":"NetBSD - 'mail.local(8)' Local Privilege Escalation (Metasploit)","url":"https://www.exploit-db.com/exploits/40385","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/netbsd_x86/local/40385.rb","file":"exploits/netbsd_x86/local/40385.rb","published":"2016-09-15","added":"2016-09-15","updated":"2016-10-27","author":"Metasploit","type":"local","platform":"netbsd_x86","port":null,"verified":true,"codes":["CVE-2016-6253"],"tags":"Metasploit Framework (MSF)","aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2016-006.txt.asc"},{"edbId":40141,"kind":"exploit","title":"NetBSD - 'mail.local(8)' Local Privilege Escalation","url":"https://www.exploit-db.com/exploits/40141","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/bsd/local/40141.c","file":"exploits/bsd/local/40141.c","published":"2016-07-21","added":"2016-07-22","updated":"2016-09-16","author":"akat1","type":"local","platform":"bsd","port":null,"verified":true,"codes":["CVE-2016-6253"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"http://akat1.pl/?id=2"}]},"verdict":{"level":"urgent","text":"2 public exploits are published in Exploit-DB (verified) and the impact is high, while EPSS rates exploitation at 3.5%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use."},"changes":[],"references":[{"url":"http://akat1.pl/?id=2","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2016-006.txt.asc","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://packetstormsecurity.com/files/138021/NetBSD-mail.local-8-Local-Root.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://www.rapid7.com/db/modules/exploit/unix/local/netbsd_mail_local","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/92101","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://www.securitytracker.com/id/1036429","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://www.exploit-db.com/exploits/40141/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://www.exploit-db.com/exploits/40385/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://akat1.pl/?id=2","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2016-006.txt.asc","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/138021/NetBSD-mail.local-8-Local-Root.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.rapid7.com/db/modules/exploit/unix/local/netbsd_mail_local","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/92101","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1036429","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/40141/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/40385/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-6253","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."}