{"id":"CVE-2011-1496","url":"https://www.cyber-defence.io/tools/cve/CVE-2011-1496","generatedAt":"2026-10-27T19:49:36.217Z","title":"tmux 1.3 and 1.4 does not properly drop group privileges, which allows local users to gain utmp group privileges via a filename to the -S command-line option.","description":"tmux 1.3 and 1.4 does not properly drop group privileges, which allows local users to gain utmp group privileges via a filename to the -S command-line option.","published":"2011-04-18T18:55:01.000Z","lastModified":"2026-06-16T23:29:30.000Z","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":["nicholas marriott/tmux"],"epss":{"score":0.00952,"percentile":0.61075,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":false,"firstPublished":"2011-04-11","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":17147,"kind":"exploit","title":"tmux 1.3/1.4 - '-S' Option Incorrect SetGID Privilege Escalation","url":"https://www.exploit-db.com/exploits/17147","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/local/17147.txt","file":"exploits/linux/local/17147.txt","published":"2011-04-11","added":"2011-04-11","updated":"2015-07-12","author":"ph0x90bic","type":"local","platform":"linux","port":null,"verified":false,"codes":["CVE-2011-1496","OSVDB-71883"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"high","text":"A public exploit is published in Exploit-DB, 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://lists.fedoraproject.org/pipermail/package-announce/2011-April/058367.html","source":"secalert@redhat.com"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058452.html","source":"secalert@redhat.com"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058548.html","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/44081","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/44239","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://www.debian.org/security/2011/dsa-2212","source":"secalert@redhat.com"},{"url":"http://www.exploit-db.com/exploits/17147","tags":["Exploit"],"source":"secalert@redhat.com"},{"url":"http://www.securityfocus.com/bid/47283","source":"secalert@redhat.com"},{"url":"http://www.vupen.com/english/advisories/2011/0897","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://www.vupen.com/english/advisories/2011/1002","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://www.vupen.com/english/advisories/2011/1015","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/66693","source":"secalert@redhat.com"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058367.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058452.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058548.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/44081","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/44239","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.debian.org/security/2011/dsa-2212","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.exploit-db.com/exploits/17147","tags":["Exploit"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/47283","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2011/0897","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2011/1002","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2011/1015","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/66693","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2011-1496","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."}