{"id":"CVE-2025-27821","aliases":["EUVD-2025-206351","GHSA-92cc-952p-v8rh"],"status":"published","title":"HDFS native client: Out of bounds write in URI parser of native HDFS client","description":"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.","severity":{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-12","score":0.00906,"percentile":0.6034,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-787"],"published":"2026-01-26T09:44:13Z","modified":"2026-10-28T02:30:24Z","fixes":[{"ecosystem":"Maven","package":"org.apache.hadoop:hadoop-hdfs-native-client","fixed_in":["3.4.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.apache.hadoop:hadoop-hdfs-native-client","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0"},{"fixed":"3.4.2"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.apache.hadoop:hadoop-hdfs-native-client","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0"},{"fixed":"3.4.2"}]}],"versions":["3.2.0","3.2.1","3.2.2","3.2.3","3.2.4","3.3.0","3.3.1","3.3.2","3.3.3","3.3.4","3.3.5","3.3.6","3.4.0","3.4.1"]}],"products":[{"vendor":"apache","product":"hadoop"},{"vendor":"apache software foundation","product":"hdfs native client"}],"references":[{"url":"https://lists.apache.org/thread/kwjhyyx0wl2z9b0mw0styjk0hhdbyplh","tags":["vendor-advisory","Mailing List","Vendor Advisory","advisory","web"]},{"url":"http://www.openwall.com/lists/oss-security/2026/01/23/7","tags":["Mailing List","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-27821","tags":["advisory"]},{"url":"https://github.com/apache/hadoop/pull/7481","tags":["web"]},{"url":"https://github.com/apache/hadoop/commit/2b32e46f666c7645f5d1e026be3982b99319ccb8","tags":["web"]},{"url":"https://issues.apache.org/jira/browse/HDFS-17754","tags":["web"]},{"url":"https://github.com/advisories/GHSA-92cc-952p-v8rh"},{"url":"https://repo.maven.apache.org/maven2","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/27xxx/CVE-2025-27821.json","tags":["advisory"]},{"url":"https://github.com/apache/hadoop","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-27821","title":"HDFS native client: Out of bounds write in URI parser of native HDFS client","description":"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.","status":"published","published":"2026-01-26T09:44:13.532Z","modified":"2026-01-26T18:13:19.241Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"adp"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:32:42.411662Z"}],"euvd":[{"id":"EUVD-2025-206351","description":"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.","status":"published","published":"2026-01-26T09:44:13Z","modified":"2026-01-26T18:13:19Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"updated_at":"2026-11-02T19:48:47.293439Z"}],"ghsa":[{"id":"GHSA-92cc-952p-v8rh","title":"Apache Hadoop HDFS Native Client has Out-of-bounds Write Vulnerability ","description":"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.","status":"published","published":"2026-01-26T12:30:27Z","modified":"2026-01-26T23:40:20Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:39:20.563096Z"}],"nvd":[{"id":"CVE-2025-27821","description":"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.","status":"published","published":"2026-01-26T10:16:05.033Z","modified":"2026-06-17T09:04:16.92Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"secondary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:11:59.073638Z"}],"osv":[{"id":"CVE-2025-27821","title":"HDFS native client: Out of bounds write in URI parser of native HDFS client","description":"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.","status":"published","published":"2026-01-26T09:44:13.532Z","modified":"2026-10-28T02:30:24.746788246Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T15:44:47.708311Z"},{"id":"GHSA-92cc-952p-v8rh","title":"Apache Hadoop HDFS Native Client has Out-of-bounds Write Vulnerability ","description":"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.","status":"published","published":"2026-01-26T12:30:27Z","modified":"2026-02-03T03:07:43.476697Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T15:46:43.123867Z"}]}}