{"id":"CVE-2011-4963","url":"https://www.cyber-defence.io/tools/cve/CVE-2011-4963","generatedAt":"2026-10-27T22:04:15.634Z","title":"nginx/Windows 1.3.x before 1.3.1 and 1.2.x before 1.2.1 allows remote attackers to bypass intended access restrictions and access restricted files via (1) a trailing .","description":"nginx/Windows 1.3.x before 1.3.1 and 1.2.x before 1.2.1 allows remote attackers to bypass intended access restrictions and access restricted files via (1) a trailing . (dot) or (2) certain \"$index_allocation\" sequences in a request.","published":"2012-07-26T19:55:01.000Z","lastModified":"2026-06-16T23:35:44.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"2.0","score":5,"severity":"MEDIUM","vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N"},"cwe":[],"affected":["f5/nginx"],"epss":{"score":0.05959,"percentile":0.93235,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (5.96%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://english.securitylab.ru/lab/PT-2012-06","tags":["Mitigation","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://mailman.nginx.org/pipermail/nginx-announce/2012/000086.html","tags":["Mitigation","Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://nginx.org/en/security_advisories.html","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://english.securitylab.ru/lab/PT-2012-06","tags":["Mitigation","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://mailman.nginx.org/pipermail/nginx-announce/2012/000086.html","tags":["Mitigation","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://nginx.org/en/security_advisories.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2011-4963","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."}