{"id":"CVE-2025-27821","details":"Out-of-bounds Write vulnerability in Apache Hadoop HDFS native client.\n\nThis issue affects Apache Hadoop: from 3.2.0 before 3.4.2.\n\nUsers are recommended to upgrade to version 3.4.2, which fixes the issue.","aliases":["GHSA-92cc-952p-v8rh"],"modified":"2026-03-14T12:43:07.907150Z","published":"2026-01-26T10:16:05.033Z","references":[{"type":"ADVISORY","url":"https://lists.apache.org/thread/kwjhyyx0wl2z9b0mw0styjk0hhdbyplh"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2026/01/23/7"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apache/hadoop","events":[{"introduced":"e97acb3bd8f3befd27418996fa5d4b50bf2e17bf"},{"fixed":"84e8b89ee2ebe6923691205b9e171badde7a495c"}],"database_specific":{"versions":[{"introduced":"3.2.0"},{"fixed":"3.4.2"}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-27821.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"}]}