{"id":"CVE-2026-73209","state":"PUBLISHED","title":"An attacker that has valid credentials can send crafted compressed data that causes the affected process to exhaust its stack and crash. The affected process is terminated, which c","description":"An attacker that has valid credentials can send crafted compressed data that causes the affected process to exhaust its stack and crash. The affected process is terminated, which can cause degradation or denial of service for IMAP. Update to non-vulnerable version. No publicly available exploits are known.","publishedAt":"2026-08-28T10:12:33.625Z","updatedAt":"2026-08-28T15:53:12.773Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"OX"},"assigner":"OX","products":["Open-Xchange GmbH OX Dovecot Pro","Open-Xchange GmbH OX Dovecot CE"],"affected":[{"vendor":"Open-Xchange GmbH","product":"OX Dovecot Pro","defaultStatus":"unaffected","versions":[{"version":"2.3.0","status":"affected","lessThan":"2.3.22.2","versionType":"semver"},{"version":"3.0.0","status":"affected","lessThan":"3.0.7","versionType":"semver"},{"version":"3.1.0","status":"affected","lessThan":"3.1.6","versionType":"semver"}],"modules":["core"]},{"vendor":"Open-Xchange GmbH","product":"OX Dovecot CE","defaultStatus":"unaffected","versions":[{"version":"2.3.0","status":"affected","lessThan":"2.4.5","versionType":"semver"}],"modules":["core"]}],"references":["https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0003.json"],"weaknesses":["CWE-674"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/73xxx/CVE-2026-73209.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-73209","state":"PUBLISHED","datePublished":"2026-08-28T10:12:33.625Z","dateUpdated":"2026-08-28T15:53:12.773Z","assignerShortName":"OX","assignerOrgId":"8ce71d90-2354-404b-a86e-bec2cc4e6981","dateReserved":"2026-08-11T13:14:10.017Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"An attacker that has valid credentials can send crafted compressed data that causes the affected process to exhaust its stack and crash. The affected process is terminated, which can cause degradation or denial of service for IMAP. Update to non-vulnerable version. No publicly available exploits are known."}],"affected":[{"vendor":"Open-Xchange GmbH","product":"OX Dovecot Pro","defaultStatus":"unaffected","versions":[{"version":"2.3.0","status":"affected","lessThan":"2.3.22.2","versionType":"semver"},{"version":"3.0.0","status":"affected","lessThan":"3.0.7","versionType":"semver"},{"version":"3.1.0","status":"affected","lessThan":"3.1.6","versionType":"semver"}],"modules":["core"]},{"vendor":"Open-Xchange GmbH","product":"OX Dovecot CE","defaultStatus":"unaffected","versions":[{"version":"2.3.0","status":"affected","lessThan":"2.4.5","versionType":"semver"}],"modules":["core"]}],"references":[{"url":"https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0003.json","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-674","description":"Uncontrolled Recursion","lang":"en","type":"cwe"}]}],"providerMetadata":{"shortName":"OX","orgId":"8ce71d90-2354-404b-a86e-bec2cc4e6981","dateUpdated":"2026-08-28T10:31:05.358Z"},"source":{"defect":"DOV-9401","discovery":"INTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-28T14:32:21.611802Z","id":"CVE-2026-73209","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":"2026-08-28T15:53:12.773Z"}}]}}}