{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-57851", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2025-08-21T14:40:40.822Z", "datePublished": "2026-04-08T13:55:00.925Z", "dateUpdated": "2026-05-01T20:44:04.799Z" }, "containers": { "cna": { "title": "Mce: privilege escalation via excessive /etc/passwd permissions", "metrics": [ { "other": { "content": { "value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "format": "CVSS" } ], "descriptions": [ { "lang": "en", "value": "A container privilege escalation flaw was found in certain Multicluster Engine for Kubernetes images. This issue stems from the /etc/passwd file being created with group-writable permissions during build time. In certain conditions, an attacker who can execute commands within an affected container, even as a non-root user, can leverage their membership in the root group to modify the /etc/passwd file. This could allow the attacker to add a new user with any arbitrary UID, including UID 0, leading to full root privileges within the container." } ], "affected": [ { "vendor": "Red Hat", "product": "Multicluster Engine for Kubernetes", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "multicluster-engine/agent-service-rhel8", "defaultStatus": "affected", "cpes": [ "cpe:/a:redhat:multicluster_engine" ] }, { "vendor": "Red Hat", "product": "Multicluster Engine for Kubernetes", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "multicluster-engine/assisted-service-8-rhel8", "defaultStatus": "affected", "cpes": [ "cpe:/a:redhat:multicluster_engine" ] }, { "vendor": "Red Hat", "product": "Multicluster Engine for Kubernetes", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "multicluster-engine/assisted-service-9-rhel9", "defaultStatus": "affected", "cpes": [ "cpe:/a:redhat:multicluster_engine" ] } ], "references": [ { "url": "https://access.redhat.com/security/cve/CVE-2025-57851", "tags": [ "vdb-entry", "x_refsource_REDHAT" ] }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2391104", "name": "RHBZ#2391104", "tags": [ "issue-tracking", "x_refsource_REDHAT" ] } ], "datePublic": "2026-04-08T13:45:54.565Z", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-276", "description": "Incorrect Default Permissions", "lang": "en", "type": "CWE" } ] } ], "x_redhatCweChain": "CWE-276: Incorrect Default Permissions", "timeline": [ { "lang": "en", "time": "2025-08-26T18:44:31.833Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-04-08T13:45:54.565Z", "value": "Made public." } ], "credits": [ { "lang": "en", "value": "Red Hat would like to thank Antony Di Scala and Michael Whale for reporting this issue." } ], "providerMetadata": { "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-05-01T20:44:04.799Z" }, "x_generator": { "engine": "cvelib 1.8.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-04-08T15:18:31.297261Z", "id": "CVE-2025-57851", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-08T15:18:38.990Z" } } ] } }