{"id":"CVE-2022-40303","url":"https://www.cyber-defence.io/tools/cve/CVE-2022-40303","generatedAt":"2026-11-04T23:56:23.416Z","title":"When parsing a multi-gigabyte XML document with the XML_PARSE_HUGE parser option enabled, several integer counters can overflow.","description":"An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an attempt to access an array at a negative 2GB offset, typically leading to a segmentation fault.","published":"2022-11-23T00:15:11.000Z","lastModified":"2026-10-14T18:17:05.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-190"],"affected":["xmlsoft/libxml2","netapp/active iq unified manager","netapp/clustered data ontap","netapp/clustered data ontap antivirus connector","netapp/netapp manageability sdk","netapp/ontap select deploy administration utility","netapp/snapmanager","apple/ipados","apple/iphone os","apple/macos","apple/tvos","apple/watchos","netapp/h300s firmware","netapp/h500s firmware","netapp/h700s firmware","netapp/h410s firmware","netapp/h410c firmware"],"epss":{"score":0.41365,"percentile":0.98673,"date":"2026-11-03","history":[{"date":"2026-09-24","score":0.41365,"percentile":0.98624}]},"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 41.4%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[{"kind":"epss","label":"EPSS jump","at":"2026-09-24T00:00:00.000Z","detail":{"to":0.41365,"from":0.22965,"percentile":0.98624},"summary":"EPSS moved from 23.0% to 41.4% probability of exploitation in the next thirty days."}],"references":[{"url":"http://seclists.org/fulldisclosure/2022/Dec/21","tags":["Mailing List","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://seclists.org/fulldisclosure/2022/Dec/24","tags":["Mailing List","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://seclists.org/fulldisclosure/2022/Dec/25","tags":["Mailing List","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://seclists.org/fulldisclosure/2022/Dec/26","tags":["Mailing List","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://seclists.org/fulldisclosure/2022/Dec/27","source":"cve@mitre.org"},{"url":"https://gitlab.gnome.org/GNOME/libxml2/-/commit/c846986356fc149915a74972bf198abc266bc2c0","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://gitlab.gnome.org/GNOME/libxml2/-/tags/v2.10.3","tags":["Release Notes","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://security.netapp.com/advisory/ntap-20221209-0003/","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://support.apple.com/kb/HT213531","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://support.apple.com/kb/HT213533","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://support.apple.com/kb/HT213534","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://support.apple.com/kb/HT213535","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://support.apple.com/kb/HT213536","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://seclists.org/fulldisclosure/2022/Dec/21","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://seclists.org/fulldisclosure/2022/Dec/24","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://seclists.org/fulldisclosure/2022/Dec/25","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://seclists.org/fulldisclosure/2022/Dec/26","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://seclists.org/fulldisclosure/2022/Dec/27","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gitlab.gnome.org/GNOME/libxml2/-/commit/c846986356fc149915a74972bf198abc266bc2c0","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gitlab.gnome.org/GNOME/libxml2/-/tags/v2.10.3","tags":["Release Notes","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20221209-0003/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/kb/HT213531","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/kb/HT213533","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/kb/HT213534","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/kb/HT213535","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/kb/HT213536","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-337522.html","source":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-341067.html","source":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","source":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-556635.html","source":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-625862.html","source":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-769027.html","source":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-40303","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."}