{"id":"CVE-2026-40538","state":"PUBLISHED","title":"An improper restriction of excessive authentication attempts vulnerability in Auto block in Synology DiskStation Manager (DSM) before 7.2.1-69057-10, 7.2.2-72806-7 and 7.3.2-86009-","description":"An improper restriction of excessive authentication attempts vulnerability in Auto block in Synology DiskStation Manager (DSM) before 7.2.1-69057-10, 7.2.2-72806-7 and 7.3.2-86009-2 allows remote attackers to read limited files via brute-force attacks.","publishedAt":"2026-09-18T08:29:15.878Z","updatedAt":"2026-09-18T10:42:50.358Z","severity":{"score":3.7,"label":"Low","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","source":"synology"},"assigner":"synology","products":["Synology DiskStation Manager (DSM)"],"affected":[{"vendor":"Synology","product":"DiskStation Manager (DSM)","defaultStatus":"affected","versions":[{"version":"7.3.2","status":"affected","lessThan":"7.3.2-86009-2","versionType":"semver"},{"version":"7.2.2","status":"affected","lessThan":"7.2.2-72806-7","versionType":"semver"},{"version":"7.2.1","status":"affected","lessThan":"7.2.1-69057-10","versionType":"semver"},{"version":"0","status":"unknown","lessThan":"7.2.1","versionType":"semver"}]}],"references":["https://www.synology.com/en-global/security/advisory/Synology_SA_26_06"],"weaknesses":["CWE-307"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/40xxx/CVE-2026-40538.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40538","state":"PUBLISHED","datePublished":"2026-09-18T08:29:15.878Z","dateUpdated":"2026-09-18T10:42:50.358Z","assignerShortName":"synology","assignerOrgId":"db201096-a0cc-46c7-9a55-61d9e221bf01","dateReserved":"2026-04-14T01:01:14.607Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"An improper restriction of excessive authentication attempts vulnerability in Auto block in Synology DiskStation Manager (DSM) before 7.2.1-69057-10, 7.2.2-72806-7 and 7.3.2-86009-2 allows remote attackers to read limited files via brute-force attacks."}],"affected":[{"vendor":"Synology","product":"DiskStation Manager (DSM)","defaultStatus":"affected","versions":[{"version":"7.3.2","status":"affected","lessThan":"7.3.2-86009-2","versionType":"semver"},{"version":"7.2.2","status":"affected","lessThan":"7.2.2-72806-7","versionType":"semver"},{"version":"7.2.1","status":"affected","lessThan":"7.2.1-69057-10","versionType":"semver"},{"version":"0","status":"unknown","lessThan":"7.2.1","versionType":"semver"}]}],"references":[{"url":"https://www.synology.com/en-global/security/advisory/Synology_SA_26_06","name":"Synology-SA-26:06 DSM"}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.7,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-307","description":"Improper Restriction of Excessive Authentication Attempts","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"synology","orgId":"db201096-a0cc-46c7-9a55-61d9e221bf01","dateUpdated":"2026-09-18T09:27:24.605Z"},"credits":[{"lang":"en","type":"finder","value":"Andreas Rothenbacher (error401.de)"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-18T10:42:03.617664Z","id":"CVE-2026-40538","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-18T10:42:50.358Z"}}]}}}