{"id":"CVE-2009-2621","url":"https://www.cyber-defence.io/tools/cve/CVE-2009-2621","generatedAt":"2026-10-27T19:04:45.770Z","title":"Squid 3.0 through 3.0.STABLE16 and 3.1 through 3.1.0.11 does not properly enforce \"buffer limits and related bound checks,\" which allows remote attackers to cause a denial of service via (1) an incomplete request or (2) a request with a large header…","description":"Squid 3.0 through 3.0.STABLE16 and 3.1 through 3.1.0.11 does not properly enforce \"buffer limits and related bound checks,\" which allows remote attackers to cause a denial of service via (1) an incomplete request or (2) a request with a large header size, related to (a) HttpMsg.cc and (b) client_side.cc.","published":"2009-07-28T17:30:01.000Z","lastModified":"2026-06-16T23:09:51.000Z","status":"Modified","sourceIdentifier":"cret@cert.org","cvss":{"version":"2.0","score":5,"severity":"MEDIUM","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P"},"cwe":["CWE-119"],"affected":["squid-cache/squid"],"epss":{"score":0.23049,"percentile":0.97742,"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":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 23.0%, higher than 98% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://secunia.com/advisories/36007","source":"cret@cert.org"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2009:161","source":"cret@cert.org"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2009:178","source":"cret@cert.org"},{"url":"http://www.securityfocus.com/bid/35812","source":"cret@cert.org"},{"url":"http://www.securitytracker.com/id?1022607","source":"cret@cert.org"},{"url":"http://www.squid-cache.org/Advisories/SQUID-2009_2.txt","tags":["Vendor Advisory"],"source":"cret@cert.org"},{"url":"http://www.squid-cache.org/Versions/v3/3.1/changesets/b9654.patch","tags":["Patch"],"source":"cret@cert.org"},{"url":"http://www.vupen.com/english/advisories/2009/2013","source":"cret@cert.org"},{"url":"http://secunia.com/advisories/36007","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2009:161","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2009:178","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/35812","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id?1022607","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.squid-cache.org/Advisories/SQUID-2009_2.txt","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.squid-cache.org/Versions/v3/3.1/changesets/b9654.patch","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2009/2013","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2009-2621","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."}