{"id":"CVE-2011-4089","url":"https://www.cyber-defence.io/tools/cve/CVE-2011-4089","generatedAt":"2026-10-27T19:44:38.445Z","title":"The bzexe command in bzip2 1.0.5 and earlier generates compressed executables that do not properly handle temporary files during extraction, which allows local users to execute arbitrary code by precreating a temporary directory.","description":"The bzexe command in bzip2 1.0.5 and earlier generates compressed executables that do not properly handle temporary files during extraction, which allows local users to execute arbitrary code by precreating a temporary directory.","published":"2014-04-16T18:37:11.000Z","lastModified":"2026-06-16T23:34:24.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"2.0","score":4.6,"severity":"MEDIUM","vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P"},"cwe":["CWE-264"],"affected":["bzip/bzip2"],"epss":{"score":0.01045,"percentile":0.63916,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2011-11-23","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":18147,"kind":"exploit","title":"bzexe (bzip2) - Race Condition","url":"https://www.exploit-db.com/exploits/18147","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/local/18147.c","file":"exploits/linux/local/18147.c","published":"2011-11-23","added":"2011-11-27","updated":"2011-11-27","author":"vladz","type":"local","platform":"linux","port":null,"verified":true,"codes":["CVE-2011-4089","OSVDB-77356"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"high","text":"A public exploit is published in Exploit-DB (verified), so the technical barrier is gone even though the severity is medium and EPSS is 1.0%. Treat it as high on anything reachable from the internet."},"changes":[],"references":[{"url":"http://seclists.org/fulldisclosure/2011/Oct/804","source":"secalert@redhat.com"},{"url":"http://www.exploit-db.com/exploits/18147","tags":["Exploit"],"source":"secalert@redhat.com"},{"url":"http://www.openwall.com/lists/oss-security/2011/10/28/16","source":"secalert@redhat.com"},{"url":"http://www.ubuntu.com/usn/USN-1308-1","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=632862","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"http://seclists.org/fulldisclosure/2011/Oct/804","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.exploit-db.com/exploits/18147","tags":["Exploit"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2011/10/28/16","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.ubuntu.com/usn/USN-1308-1","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=632862","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2011-4089","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."}