{"id":"CVE-2009-0641","aliases":["EUVD-2009-0644","GHSA-5vvp-mjcx-6cg5"],"status":"published","title":"sys_term.c in telnetd in FreeBSD 7.0-RELEASE and other 7.x versions deletes dangerous environment...","description":"sys_term.c in telnetd in FreeBSD 7.0-RELEASE and other 7.x versions deletes dangerous environment variables with a method that was valid only in older FreeBSD distributions, which might allow remote attackers to execute arbitrary code by passing a crafted environment variable from a telnet client, as demonstrated by an LD_PRELOAD value that references a malicious library.","severity":{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.09321,"percentile":0.95408,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-16","CWE-264"],"published":"2009-02-18T17:00:00Z","modified":"2026-06-16T23:05:28Z","exploits":[{"source":"exploitdb","id":"EDB-8055","title":"FreeBSD 7.0-RELEASE - Telnet Daemon Privilege Escalation","type":"local","platform":"freebsd","date":"2009-02-16","verified":true,"url":"https://www.exploit-db.com/exploits/8055"}],"products":[{"vendor":"freebsd","product":"freebsd"}],"references":[{"url":"http://security.freebsd.org/advisories/FreeBSD-SA-09:05.telnetd.asc","tags":["vendor-advisory","x_refsource_FREEBSD","x_transferred","Patch"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/48780","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.securityfocus.com/bid/33777","tags":["vdb-entry","x_refsource_BID","x_transferred","Exploit"]},{"url":"http://lists.grok.org.uk/pipermail/full-disclosure/2009-February/067954.html","tags":["mailing-list","x_refsource_FULLDISC","x_transferred","Exploit"]},{"url":"https://www.exploit-db.com/exploits/8055","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-0641"},{"url":"https://github.com/advisories/GHSA-5vvp-mjcx-6cg5"}],"sources":{"cve":[{"id":"CVE-2009-0641","description":"sys_term.c in telnetd in FreeBSD 7.0-RELEASE and other 7.x versions deletes dangerous environment variables with a method that was valid only in older FreeBSD distributions, which might allow remote attackers to execute arbitrary code by passing a crafted environment variable from a telnet client, as demonstrated by an LD_PRELOAD value that references a malicious library.","status":"published","published":"2009-02-18T17:00:00Z","modified":"2024-08-07T04:40:05.105Z","updated_at":"2026-11-02T14:33:26.302774Z"}],"euvd":[{"id":"EUVD-2009-0644","description":"sys_term.c in telnetd in FreeBSD 7.0-RELEASE and other 7.x versions deletes dangerous environment variables with a method that was valid only in older FreeBSD distributions, which might allow remote attackers to execute arbitrary code by passing a crafted environment variable from a telnet client, as demonstrated by an LD_PRELOAD value that references a malicious library.","status":"published","published":"2009-02-18T17:00:00Z","modified":"2024-08-07T04:40:05Z","updated_at":"2026-11-03T01:39:25.189813Z"}],"ghsa":[{"id":"GHSA-5vvp-mjcx-6cg5","title":"sys_term.c in telnetd in FreeBSD 7.0-RELEASE and other 7.x versions deletes dangerous environment...","description":"sys_term.c in telnetd in FreeBSD 7.0-RELEASE and other 7.x versions deletes dangerous environment variables with a method that was valid only in older FreeBSD distributions, which might allow remote attackers to execute arbitrary code by passing a crafted environment variable from a telnet client, as demonstrated by an LD_PRELOAD value that references a malicious library.","status":"published","published":"2022-05-02T03:17:07Z","modified":"2023-01-31T05:06:51Z","updated_at":"2026-11-02T14:49:06.344022Z"}],"nvd":[{"id":"CVE-2009-0641","description":"sys_term.c in telnetd in FreeBSD 7.0-RELEASE and other 7.x versions deletes dangerous environment variables with a method that was valid only in older FreeBSD distributions, which might allow remote attackers to execute arbitrary code by passing a crafted environment variable from a telnet client, as demonstrated by an LD_PRELOAD value that references a malicious library.","status":"published","published":"2009-02-20T06:47:48.25Z","modified":"2026-06-16T23:05:28.637Z","cvss":[{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-16","CWE-264"],"updated_at":"2026-11-02T14:01:33.417327Z"}]}}