{"id":"CVE-2011-0490","url":"https://www.cyber-defence.io/tools/cve/CVE-2011-0490","generatedAt":"2026-10-27T17:43:56.593Z","title":"Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha makes calls to Libevent within Libevent log handlers, which might allow remote attackers to cause a denial of service (daemon crash) via vectors that trigger certain log messages.","description":"Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha makes calls to Libevent within Libevent log handlers, which might allow remote attackers to cause a denial of service (daemon crash) via vectors that trigger certain log messages.","published":"2011-01-19T12:00:20.000Z","lastModified":"2026-06-16T23:27:30.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":5,"severity":"MEDIUM","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P"},"cwe":[],"affected":["tor/tor"],"epss":{"score":0.02517,"percentile":0.84711,"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 (2.52%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://archives.seul.org/or/announce/Jan-2011/msg00000.html","tags":["Patch"],"source":"cve@mitre.org"},{"url":"http://blog.torproject.org/blog/tor-02129-released-security-patches","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/45953","source":"cve@mitre.org"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/64889","source":"cve@mitre.org"},{"url":"https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLog","tags":["Patch"],"source":"cve@mitre.org"},{"url":"https://trac.torproject.org/projects/tor/ticket/2190","source":"cve@mitre.org"},{"url":"http://archives.seul.org/or/announce/Jan-2011/msg00000.html","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://blog.torproject.org/blog/tor-02129-released-security-patches","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/45953","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/64889","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLog","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://trac.torproject.org/projects/tor/ticket/2190","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2011-0490","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."}