CVE-2025-48769

import os import sys def exploit_cve_2025_48769(target_path): """CVE-2025-48769 PoC - Apache NuttX fs_rename Use After Free""" # 构造恶意重命名请求以触发缓冲区重新分配 malicious_request = create_malicious_rename_request(target_path) return malicious_request

{"cve": {"id": "CVE-2025-48769", "sourceIdentifier": "[email protected]", "published": "2026-01-01T17:15:43.243", "lastModified": "2026-01-06T14:35:26.893", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Use After Free vulnerability was discovered in fs/vfs/fs_rename code of the Apache NuttX RTOS, that due recursive implementation and single buffer use by two different pointer variables allowed arbitrary user provided size buffer reallocation and write to the previously freed heap chunk, that in specific cases could cause unintended virtual filesystem rename/move operation results.\n\nThis issue affects Apache NuttX RTOS: from 7.20 before 12.11.0.\n\nUsers of virtual filesystem based services with write access especially when exposed over the network (i.e. FTP) are affected and recommended to upgrade to version 12.11.0 that fixes the issue."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "baseScore": 8.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.2}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-416"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:apache:nuttx:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.20", "versionEndExcluding": "12.11.0", "matchCriteriaId": "81ECDE8C-6BF7-4DFA-8054-18D43595BC63"}]}]}], "references": [{"url": "https://github.com/apache/nuttx/pull/16455", "source": "[email protected]", "tags": ["Issue Tracking"]}, {"url": "https://lists.apache.org/thread/7m83v11ldfq7bvw72n9t5sccocczocjn", "source": "[email protected]", "tags": ["Mailing List", "Vendor Advisory"]}, {"url": "http://www.openwall.com/lists/oss-security/2025/12/31/11", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"]}]}}