{"id":"CVE-2009-0692","url":"https://www.cyber-defence.io/tools/cve/CVE-2009-0692","generatedAt":"2026-10-27T19:56:29.649Z","title":"Stack-based buffer overflow in the script_write_params method in client/dhclient.c in ISC DHCP dhclient 4.1 before 4.1.0p1, 4.0 before 4.0.1p1, 3.1 before 3.1.2p1, 3.0, and 2.0 allows remote DHCP servers to execute arbitrary code via a crafted…","description":"Stack-based buffer overflow in the script_write_params method in client/dhclient.c in ISC DHCP dhclient 4.1 before 4.1.0p1, 4.0 before 4.0.1p1, 3.1 before 3.1.2p1, 3.0, and 2.0 allows remote DHCP servers to execute arbitrary code via a crafted subnet-mask option.","published":"2009-07-14T20:30:00.000Z","lastModified":"2026-06-16T23:05:35.000Z","status":"Modified","sourceIdentifier":"cret@cert.org","cvss":{"version":"2.0","score":10,"severity":"HIGH","vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C"},"cwe":["CWE-119"],"affected":["isc/dhcp"],"epss":{"score":0.2578,"percentile":0.97957,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2009-07-27","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":9265,"kind":"exploit","title":"ISC DHCP dhclient < 3.1.2p1 - Remote Buffer Overflow (PoC)","url":"https://www.exploit-db.com/exploits/9265","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/dos/9265.c","file":"exploits/linux/dos/9265.c","published":"2009-07-27","added":"2009-07-26","updated":null,"author":"Jon Oberheide","type":"dos","platform":"linux","port":null,"verified":true,"codes":["CVE-2009-0692","OSVDB-55819"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 25.8%, higher than 98% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2009-010.txt.asc","source":"cret@cert.org"},{"url":"http://itrc.hp.com/service/cki/docDisplay.do?docId=emr_na-c02286083","source":"cret@cert.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00003.html","source":"cret@cert.org"},{"url":"http://secunia.com/advisories/35785","tags":["Vendor Advisory"],"source":"cret@cert.org"},{"url":"http://secunia.com/advisories/35829","source":"cret@cert.org"},{"url":"http://secunia.com/advisories/35830","source":"cret@cert.org"},{"url":"http://secunia.com/advisories/35831","source":"cret@cert.org"},{"url":"http://secunia.com/advisories/35832","source":"cret@cert.org"},{"url":"http://secunia.com/advisories/35841","source":"cret@cert.org"},{"url":"http://secunia.com/advisories/35849","source":"cret@cert.org"},{"url":"http://secunia.com/advisories/35850","source":"cret@cert.org"},{"url":"http://secunia.com/advisories/35851","source":"cret@cert.org"},{"url":"http://secunia.com/advisories/35880","source":"cret@cert.org"},{"url":"http://secunia.com/advisories/36457","source":"cret@cert.org"},{"url":"http://secunia.com/advisories/37342","source":"cret@cert.org"},{"url":"http://secunia.com/advisories/40551","source":"cret@cert.org"},{"url":"http://security.gentoo.org/glsa/glsa-200907-12.xml","source":"cret@cert.org"},{"url":"http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.561471","source":"cret@cert.org"},{"url":"http://www.debian.org/security/2009/dsa-1833","source":"cret@cert.org"},{"url":"http://www.kb.cert.org/vuls/id/410676","tags":["US Government Resource"],"source":"cret@cert.org"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2009:151","source":"cret@cert.org"},{"url":"http://www.osvdb.org/55819","source":"cret@cert.org"},{"url":"http://www.redhat.com/support/errata/RHSA-2009-1136.html","source":"cret@cert.org"},{"url":"http://www.redhat.com/support/errata/RHSA-2009-1154.html","source":"cret@cert.org"},{"url":"http://www.securityfocus.com/bid/35668","source":"cret@cert.org"},{"url":"http://www.securitytracker.com/id?1022548","source":"cret@cert.org"},{"url":"http://www.ubuntu.com/usn/usn-803-1","source":"cret@cert.org"},{"url":"http://www.vupen.com/english/advisories/2009/1891","source":"cret@cert.org"},{"url":"http://www.vupen.com/english/advisories/2010/1796","source":"cret@cert.org"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=507717","source":"cret@cert.org"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10758","source":"cret@cert.org"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5941","source":"cret@cert.org"},{"url":"https://www.isc.org/downloadables/12","source":"cret@cert.org"},{"url":"https://www.isc.org/node/468","tags":["Patch","Vendor Advisory"],"source":"cret@cert.org"},{"url":"https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01177.html","source":"cret@cert.org"},{"url":"https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00340.html","source":"cret@cert.org"},{"url":"http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2009-010.txt.asc","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://itrc.hp.com/service/cki/docDisplay.do?docId=emr_na-c02286083","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00003.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/35785","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/35829","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/35830","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/35831","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/35832","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/35841","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/35849","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/35850","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/35851","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/35880","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/36457","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/37342","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/40551","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://security.gentoo.org/glsa/glsa-200907-12.xml","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.561471","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.debian.org/security/2009/dsa-1833","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.kb.cert.org/vuls/id/410676","tags":["US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2009:151","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.osvdb.org/55819","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.redhat.com/support/errata/RHSA-2009-1136.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.redhat.com/support/errata/RHSA-2009-1154.html","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2009-0692","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."}