{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2026-50219","sourceIdentifier":"cve@mitre.org","published":"2026-06-04T06:16:25.050","lastModified":"2026-11-10T13:19:19.150","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_GetBuffer, XML_Parse, XML_ParseBuffer, XML_ParserFree, or XML_ParserReset from within handlers in cases of a policy violation. Thus, a use-after-free can occur,"},{"lang":"es","value":"libexpat anterior a 2.8.2 carece de seguimiento de la profundidad de las llamadas al gestor para las llamadas a XML_GetBuffer, XML_Parse, XML_ParseBuffer, XML_ParserFree o XML_ParserReset desde dentro de los gestores en casos de violación de política. Por lo tanto, puede producirse un uso después de liberación,"}],"affected":[{"source":"cve@mitre.org","affectedData":[{"vendor":"libexpat project","product":"libexpat","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.8.2","versionType":"semver","status":"affected"}]}]},{"source":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","affectedData":[{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)","defaultStatus":"unknown","versions":[{"version":"V3.1.7","lessThan":"*","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)","defaultStatus":"unknown","versions":[{"version":"V3.1.7","lessThan":"*","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)","defaultStatus":"unknown","versions":[{"version":"V3.1.7","lessThan":"*","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)","defaultStatus":"unknown","versions":[{"version":"V3.1.7","lessThan":"*","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)","defaultStatus":"unknown","versions":[{"version":"V3.1.7","lessThan":"*","versionType":"custom","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"cve@mitre.org","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","baseScore":4.9,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"LOW"},"exploitabilityScore":1.4,"impactScore":3.4},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","baseScore":5.9,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"LOW"},"exploitabilityScore":2.5,"impactScore":3.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-06-04T12:36:01.001143Z","id":"CVE-2026-50219","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"cve@mitre.org","type":"Secondary","description":[{"lang":"en","value":"CWE-416"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*","versionEndExcluding":"2.8.2","matchCriteriaId":"E3A57811-3797-4D35-A4AC-E1AB3CE6F1F3"}]}]}],"references":[{"url":"https://github.com/libexpat/libexpat/pull/1246","source":"cve@mitre.org","tags":["Issue Tracking","Patch"]},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-457936.html","source":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}]}}