{"id":"CVE-2026-50056","revision":null,"records":[{"revision":"a24e4b0da8cf40f9b96b950bcc8de101","observedAt":"2026-10-24T04:48:20.602+00:00","statement":{"source":"cve-program","id":"CVE-2026-50056","aliases":[],"title":"Zimbra Collaboration Suite Local Privilege Escalation via zmmailboxdmgr JVM Argument Injection","description":"A local privilege escalation vulnerability in the zmmailboxdmgr launcher of Zimbra Collaboration Suite (ZCS) allows the Unix zimbra account to execute arbitrary commands as root. The passwordless sudo interface accepts JVM arguments that are not adequately restricted. An attacker can postpone Jetty's privilege drop, register an OnOutOfMemoryError command and force heap exhaustion during startup, causing the command to execute while the JVM still runs as root. Exploitation requires local command execution as zimbra on a mailbox server and interrupts mailboxd during the malicious restart. ZCS 10.1.16 and 10.1.21 are affected.","state":0,"publishedAt":"2026-10-23T13:30:43.654+00:00","modifiedAt":"2026-10-24T03:55:30.742+00:00","affected":[{"ecosystem":"Vendor product","name":"Zimbra Collaboration Suite","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Zimbra\",\n                    \"product\": \"Zimbra Collaboration Suite\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"10.1.21\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories","https://www.rapid7.com/blog/post/ve-breaking-zimbra-identity-boundaries-part-1/"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-50056","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-50056","identifiers":["CVE-2026-50056"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-280ab9b738c440619b1566ef8acc890e","complete":false,"records":159,"lastAttemptAt":"2026-10-24T13:23:48.3812887+00:00","lastSuccessAt":"2026-10-24T13:23:48.4033916+00:00","error":null,"lastVerifiedAt":"2026-10-24T13:23:48.4033916+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-10-24T13:19:59.8513894+00:00","complete":true,"records":1093,"lastAttemptAt":"2026-10-24T13:19:59.8513894+00:00","lastSuccessAt":"2026-10-24T13:20:00.1461791+00:00","error":null,"lastVerifiedAt":"2026-10-24T13:20:00.1461806+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-0dce8e3d280c4fd5acb49a1dbc4ac557","complete":false,"records":475,"lastAttemptAt":"2026-10-24T13:20:25.5538155+00:00","lastSuccessAt":"2026-10-24T13:20:25.548+00:00","error":null,"lastVerifiedAt":"2026-10-24T13:20:25.548+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":500,"expectedIdentifiers":13474},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-2375a4e597279abf92e8747e140fe8da9d421877cd49cae3ac69a2cb78469b2c","complete":true,"records":9779,"lastAttemptAt":"2026-10-24T13:19:54.7393519+00:00","lastSuccessAt":"2026-10-24T13:19:53.1346702+00:00","error":null,"lastVerifiedAt":"2026-10-24T13:19:54.7393519+00:00","snapshotPublishedAt":"2026-10-24T03:03:12+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-16ad89dfea13ab9e9b0108e63a759d63bd4559cc68b58491107d62ee35bbbaf2","complete":true,"records":1965,"lastAttemptAt":"2026-10-24T13:17:10.0113348+00:00","lastSuccessAt":"2026-10-23T16:01:26.4487605+00:00","error":null,"lastVerifiedAt":"2026-10-24T13:17:10.0113348+00:00","snapshotPublishedAt":"2026-10-21T12:18:07+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-7da67a15aa6e56a0e3081a7646dc74d537e6ef974afc593c2b1794ed01970648","complete":true,"records":2969,"lastAttemptAt":"2026-10-24T13:19:59.8029152+00:00","lastSuccessAt":"2026-10-24T13:19:59.1145547+00:00","error":null,"lastVerifiedAt":"2026-10-24T13:19:59.8029152+00:00","snapshotPublishedAt":"2026-10-24T08:47:51+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-01c673643721642d348dd2cebd6ec154e69bb7cd20a86eeae91240dc3610a60f","complete":true,"records":230735,"lastAttemptAt":"2026-10-24T13:19:40.4739691+00:00","lastSuccessAt":"2026-10-24T13:19:32.2429544+00:00","error":null,"lastVerifiedAt":"2026-10-24T13:19:40.4739691+00:00","snapshotPublishedAt":"2026-10-24T04:48:23+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null}]}