{"id":"CVE-2021-3518","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-3518","generatedAt":"2026-11-05T01:25:28.714Z","title":"An attacker who is able to submit a crafted file to be processed by an application linked with libxml2 could trigger a use-after-free.","description":"There's a flaw in libxml2 in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by an application linked with libxml2 could trigger a use-after-free. The greatest impact from this flaw is to confidentiality, integrity, and availability.","published":"2021-05-18T12:15:08.000Z","lastModified":"2026-10-14T10:17:44.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-416"],"affected":["xmlsoft/libxml2","debian/debian linux","redhat/jboss core services","redhat/enterprise linux","fedoraproject/fedora","netapp/active iq unified manager","netapp/clustered data ontap","netapp/clustered data ontap antivirus connector","netapp/manageability software development kit","netapp/ontap select deploy administration utility","netapp/snapdrive","netapp/hci h410c firmware","oracle/communications cloud native core network function cloud native environment","oracle/enterprise manager base platform","oracle/enterprise manager ops center","oracle/mysql workbench","oracle/peoplesoft enterprise peopletools","oracle/real user experience insight"],"epss":{"score":0.21859,"percentile":0.97649,"date":"2026-11-03","history":[{"date":"2026-09-24","score":0.21859,"percentile":0.97564}]},"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 21.9%, higher than 98% 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":0.21859,"from":0.03653,"percentile":0.97564},"summary":"EPSS moved from 3.7% to 21.9% probability of exploitation in the next thirty days."}],"references":[{"url":"http://seclists.org/fulldisclosure/2021/Jul/54","tags":["Mailing List","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://seclists.org/fulldisclosure/2021/Jul/55","tags":["Mailing List","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://seclists.org/fulldisclosure/2021/Jul/58","tags":["Mailing List","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://seclists.org/fulldisclosure/2021/Jul/59","tags":["Mailing List","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1954242","tags":["Issue Tracking","Patch","Third Party 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Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","source":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-3518","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."}