{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-91041", "assignerOrgId": "e51fbebd-6053-4e49-959f-1b94eeb69a2c", "state": "PUBLISHED", "assignerShortName": "eclipse", "dateReserved": "2026-09-23T13:42:24.320Z", "datePublished": "2026-10-20T13:10:14.903Z", "dateUpdated": "2026-10-20T15:30:22.550Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "e51fbebd-6053-4e49-959f-1b94eeb69a2c", "shortName": "eclipse", "dateUpdated": "2026-10-20T13:10:14.903Z" }, "title": "FileX fault-tolerant log replay writes past the destination sector when mounting a crafted FAT image", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-787", "description": "CWE-787 Out-of-bounds Write", "type": "CWE" } ] }, { "descriptions": [ { "lang": "en", "cweId": "CWE-1284", "description": "CWE-1284 Improper Validation of Specified Quantity in Input", "type": "CWE" } ] } ], "affected": [ { "vendor": "Eclipse Foundation", "product": "Eclipse ThreadX - FileX", "packageName": "FileX", "versions": [ { "status": "affected", "version": "0", "lessThanOrEqual": "6.5.1.202602", "versionType": "custom" }, { "status": "unaffected", "version": "6.5.2.202603" } ], "defaultStatus": "unaffected" } ], "descriptions": [ { "lang": "en", "value": "Mounting an attacker-controlled FAT image with fault tolerance enabled causes an out-of-bounds heap write during log replay. The write is attacker-positioned and attacker-valued, and on a common embedded memory layout it reaches the FX_MEDIA driver callback, giving control of the instruction pointer.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "
Mounting an attacker-controlled FAT image with fault tolerance enabled causes an out-of-bounds heap write during log replay. The write is attacker-positioned and attacker-valued, and on a common embedded memory layout it reaches the FX_MEDIA driver callback, giving control of the instruction pointer.
" } ] } ], "references": [ { "url": "https://github.com/eclipse-threadx/filex/security/advisories/GHSA-c8cj-fj9j-426v" } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV3_1": { "version": "3.1", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H" } } ], "credits": [ { "lang": "en", "value": "adawn0106", "type": "reporter" } ], "source": { "discovery": "UNKNOWN" }, "x_generator": { "engine": "Vulnogram 1.0.5" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-10-20T15:29:42.506041Z", "id": "CVE-2026-91041", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-20T15:30:22.550Z" } } ] } }