CVE-2026-81557

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-81557", "assignerOrgId": "db201096-a0cc-46c7-9a55-61d9e221bf01", "state": "PUBLISHED", "assignerShortName": "synology", "dateReserved": "2026-08-27T04:39:53.948Z", "datePublished": "2026-11-12T03:36:38.345Z", "dateUpdated": "2026-11-12T03:36:38.345Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "affected", "product": "DiskStation Manager (DSM)", "vendor": "Synology", "versions": [{"lessThan": "7.4.1-90080-1", "status": "affected", "version": "7.4.1", "versionType": "semver"}, {"lessThan": "7.3.2-86009-5", "status": "affected", "version": "7.3.2", "versionType": "semver"}, {"lessThan": "7.3.2", "status": "unknown", "version": "0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Lubin Leclanche"}], "descriptions": [{"lang": "en", "value": "An improper neutralization of input during web page generation vulnerability in the DSMNotify in Synology DiskStation Manager (DSM) before 7.3.2-86009-5 and 7.4.1-90080-1 allows remote authenticated users to read or write specific files."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "description": "Improper Neutralization of Input During Web Page Generation", "lang": "en", "type": "CWE"}]}], "references": [{"name": "Synology-SA-26:18 DSM", "url": "https://www.synology.com/en-global/security/advisory/Synology_SA_26_18"}], "providerMetadata": {"orgId": "db201096-a0cc-46c7-9a55-61d9e221bf01", "shortName": "synology", "dateUpdated": "2026-11-12T03:36:38.345Z"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "affected", "product": "DiskStation Manager (DSM)", "vendor": "Synology", "versions": [{"lessThan": "7.4.1-90080-1", "status": "affected", "version": "7.4.1", "versionType": "semver"}, {"lessThan": "7.3.2-86009-5", "status": "affected", "version": "7.3.2", "versionType": "semver"}, {"lessThan": "7.3.2", "status": "unknown", "version": "0", "versionType": "semver"}]}], "source": "security@synology.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An improper neutralization of input during web page generation vulnerability in the DSMNotify in Synology DiskStation Manager (DSM) before 7.3.2-86009-5 and 7.4.1-90080-1 allows remote authenticated users to read or write specific files."}], "id": "CVE-2026-81557", "lastModified": "2026-11-12T18:50:59.773", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 2.7, "source": "security@synology.com", "type": "Primary"}]}, "published": "2026-11-12T04:17:20.740", "references": [{"source": "security@synology.com", "url": "https://www.synology.com/en-global/security/advisory/Synology_SA_26_18"}], "sourceIdentifier": "security@synology.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security@synology.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.4.1,7.4.1-90080-1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.3.2,7.3.2-86009-5)"}}, {"platform": null, "status": "unknown", "versions": {"scheme": "semver", "value": "[0,7.3.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "DiskStation Manager (DSM)", "source": "cna", "vendor": "Synology"}, "product": "diskstation_manager", "vendor": "synology"}], "created": "2026-11-12T21:15:09.125510+00:00", "title": "Authenticated Web Page Injection Allowing Remote File Access in Synology DSMNotify", "updated": "2026-11-13T07:45:17.186052+00:00", "vendors": ["synology", "synology$PRODUCT$diskstation_manager"]}