{"id":"CVE-2026-125393","state":"PUBLISHED","title":"MailEnable Enterprise Premium before 10.62 Heap Overflow via IMAP X-FB-FETCH","description":"MailEnable Enterprise Premium before 10.62 contains a heap overflow vulnerability in the IMAP X-FB-FETCH command that allows authenticated users to overflow a fixed 0x400-byte heap buffer. Attackers can supply an X-FB-USER address longer than about 1016 bytes, which is formatted without a length check, to crash the IMAP service and cause denial of service.","publishedAt":"2026-11-09T23:27:57.983Z","updatedAt":"2026-11-09T23:27:57.983Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["MailEnable MailEnable Enterprise Premium"],"affected":[{"vendor":"MailEnable","product":"MailEnable Enterprise Premium","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"10.62","versionType":"custom"}]}],"references":["https://www.mailenable.com/Premium-ReleaseNotes.txt","https://www.vulncheck.com/advisories/mailenable-enterprise-premium-before-10.62-heap-overflow-via-imap-x-fb-fetch"],"weaknesses":["CWE-122"],"ingestedAt":"2026-11-09T23:36:06.628Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/125xxx/CVE-2026-125393.json","commit":"b5e35fd13cceb3fc2d7ace24f43c95cd80e7dc5f","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-125393","state":"PUBLISHED","datePublished":"2026-11-09T23:27:57.983Z","dateUpdated":"2026-11-09T23:27:57.983Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-11-09T22:03:12.559Z"},"containers":{"cna":{"title":"MailEnable Enterprise Premium before 10.62 Heap Overflow via IMAP X-FB-FETCH","descriptions":[{"lang":"en","value":"MailEnable Enterprise Premium before 10.62 contains a heap overflow vulnerability in the IMAP X-FB-FETCH command that allows authenticated users to overflow a fixed 0x400-byte heap buffer. Attackers can supply an X-FB-USER address longer than about 1016 bytes, which is formatted without a length check, to crash the IMAP service and cause denial of service."}],"affected":[{"vendor":"MailEnable","product":"MailEnable Enterprise Premium","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"10.62","versionType":"custom"}]}],"references":[{"url":"https://www.mailenable.com/Premium-ReleaseNotes.txt","tags":["release-notes"]},{"url":"https://www.vulncheck.com/advisories/mailenable-enterprise-premium-before-10.62-heap-overflow-via-imap-x-fb-fetch","name":"VulnCheck Advisory: MailEnable Enterprise Premium before 10.62 Heap Overflow via IMAP X-FB-FETCH","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-122","lang":"en","description":"Heap-based Buffer Overflow","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-11-09T23:27:57.983Z"},"datePublic":"2026-11-03T00:00:00.000Z","credits":[{"lang":"en","value":"Jobe Predo","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}}}}}