CVE-2025-65855

{"id": "CVE-2025-65855", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.6, "attackVector": "PHYSICAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 0.7}]}, "published": "2025-12-17T17:15:50.657", "references": [{"url": "https://docs.espressif.com/projects/esp-idf/en/v4.3.2/", "tags": ["Product"], "source": "cve@mitre.org"}, {"url": "https://luismirandaacebedo.github.io/CVE-2025-65855/", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-319"}, {"lang": "en", "value": "CWE-494"}, {"lang": "en", "value": "CWE-798"}]}], "descriptions": [{"lang": "en", "value": "The OTA firmware update mechanism in Netun Solutions HelpFlash IoT (firmware v18_178_221102_ASCII_PRO_1R5_50) uses hard-coded WiFi credentials identical across all devices and does not authenticate update servers or validate firmware signatures. An attacker with brief physical access can activate OTA mode (8-second button press), create a malicious WiFi AP using the known credentials, and serve malicious firmware via unauthenticated HTTP to achieve arbitrary code execution on this safety-critical emergency signaling device."}], "lastModified": "2026-01-06T15:09:16.853", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:netun:helpflash_iot_firmware:18_178_221102_ascii_pro_1r5_50:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "73ECD6A5-17B9-4F59-A643-27B4A7DD0828"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:netun:helpflash_iot:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "0E7A00CC-0A47-4690-9652-74AEFA5F53DD"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve@mitre.org"}