{"id":"CVE-2025-47436","aliases":["AZL-61829","AZL-61836","EUVD-2025-14947","GHSA-h527-m3cp-9hm7"],"status":"published","title":"Apache ORC: Potential Heap Buffer Overflow during C++ LZO Decompression","description":"Heap-based Buffer Overflow vulnerability in Apache ORC.\n\nA vulnerability has been identified in the ORC C++ LZO decompression logic, where specially crafted malformed ORC files can cause the decompressor to allocate a 250-byte buffer but then attempts to copy 295 bytes into it. It causes memory corruption.\n\nThis issue affects Apache ORC C++ library: through 1.8.8, from 1.9.0 through 1.9.5, from 2.0.0 through 2.0.4, from 2.1.0 through 2.1.1.\n\nUsers are recommended to upgrade to version 1.8.9, 1.9.6, 2.0.5, and 2.1.2, which fix the issue.","severity":{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/S:N/RE:M/U:Amber","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00566,"percentile":0.47434,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122"],"published":"2025-05-14T13:11:36Z","modified":"2026-11-05T05:36:30Z","affected":[{"source":"osv","ecosystem":"Azure Linux:2","package":"orc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.4.31-4"}]}]},{"source":"osv","ecosystem":"Azure Linux:3","package":"orc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.4.39-2"}]}]}],"products":[{"vendor":"apache","product":"orc"},{"vendor":"apache software foundation","product":"apache orc"}],"references":[{"url":"https://orc.apache.org/security/CVE-2025-47436/","tags":["vendor-advisory","Third Party Advisory","advisory"]},{"url":"https://lists.apache.org/thread/kd6tlv8fs5jybmsgxr4vrkdxyc866wrn","tags":["mailing-list","Mailing List","Vendor Advisory","article"]},{"url":"http://www.openwall.com/lists/oss-security/2025/05/13/4","tags":["Mailing List","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-47436","tags":["web","advisory"]},{"url":"https://orc.apache.org/security/CVE-2025-47436"},{"url":"https://github.com/advisories/GHSA-h527-m3cp-9hm7"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/47xxx/CVE-2025-47436.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-47436","title":"Apache ORC: Potential Heap Buffer Overflow during C++ LZO Decompression","description":"Heap-based Buffer Overflow vulnerability in Apache ORC.\n\nA vulnerability has been identified in the ORC C++ LZO decompression logic, where specially crafted malformed ORC files can cause the decompressor to allocate a 250-byte buffer but then attempts to copy 295 bytes into it. It causes memory corruption.\n\nThis issue affects Apache ORC C++ library: through 1.8.8, from 1.9.0 through 1.9.5, from 2.0.0 through 2.0.4, from 2.1.0 through 2.1.1.\n\nUsers are recommended to upgrade to version 1.8.9, 1.9.6, 2.0.5, and 2.1.2, which fix the issue.","status":"published","published":"2025-05-14T13:11:36.329Z","modified":"2025-05-14T20:58:23.567Z","cvss":[{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/S:N/RE:M/U:Amber","level":"medium","assessor":"cna"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T14:32:25.982948Z"}],"euvd":[{"id":"EUVD-2025-14947","description":"Heap-based Buffer Overflow vulnerability in Apache ORC.\n\nA vulnerability has been identified in the ORC C++ LZO decompression logic, where specially crafted malformed ORC files can cause the decompressor to allocate a 250-byte buffer but then attempts to copy 295 bytes into it. It causes memory corruption.\n\nThis issue affects Apache ORC C++ library: through 1.8.8, from 1.9.0 through 1.9.5, from 2.0.0 through 2.0.4, from 2.1.0 through 2.1.1.\n\nUsers are recommended to upgrade to version 1.8.9, 1.9.6, 2.0.5, and 2.1.2, which fix the issue.","status":"published","published":"2025-05-14T13:11:36Z","modified":"2025-05-14T20:58:23Z","cvss":[{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/S:N/RE:M/U:Amber","level":"medium"}],"updated_at":"2026-11-02T20:32:47.525663Z"}],"ghsa":[{"id":"GHSA-h527-m3cp-9hm7","title":"Heap-based Buffer Overflow vulnerability in Apache ORC.\n\nA vulnerability has been identified in...","description":"Heap-based Buffer Overflow vulnerability in Apache ORC.\n\nA vulnerability has been identified in the ORC C++ LZO decompression logic, where specially crafted malformed ORC files can cause the decompressor to allocate a 250-byte buffer but then attempts to copy 295 bytes into it. It causes memory corruption.\n\nThis issue affects Apache ORC C++ library: through 1.8.8, from 1.9.0 through 1.9.5, from 2.0.0 through 2.0.4, from 2.1.0 through 2.1.1.\n\nUsers are recommended to upgrade to version 1.8.9, 1.9.6, 2.0.5, and 2.1.2, which fix the issue.","status":"published","published":"2025-05-14T15:31:38Z","modified":"2025-07-14T15:31:33Z","cvss":[{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:X/R:X/V:X/RE:M/U:Amber","level":"medium"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T15:03:00.541352Z"}],"nvd":[{"id":"CVE-2025-47436","description":"Heap-based Buffer Overflow vulnerability in Apache ORC.\n\nA vulnerability has been identified in the ORC C++ LZO decompression logic, where specially crafted malformed ORC files can cause the decompressor to allocate a 250-byte buffer but then attempts to copy 295 bytes into it. It causes memory corruption.\n\nThis issue affects Apache ORC C++ library: through 1.8.8, from 1.9.0 through 1.9.5, from 2.0.0 through 2.0.4, from 2.1.0 through 2.1.1.\n\nUsers are recommended to upgrade to version 1.8.9, 1.9.6, 2.0.5, and 2.1.2, which fix the issue.","status":"published","published":"2025-05-14T14:15:30.703Z","modified":"2026-06-17T09:28:06.387Z","cvss":[{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:X/R:X/V:X/RE:M/U:Amber","level":"medium","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T14:11:08.321805Z"}],"osv":[{"id":"CVE-2025-47436","title":"Apache ORC: Potential Heap Buffer Overflow during C++ LZO Decompression","description":"Heap-based Buffer Overflow vulnerability in Apache ORC.\n\nA vulnerability has been identified in the ORC C++ LZO decompression logic, where specially crafted malformed ORC files can cause the decompressor to allocate a 250-byte buffer but then attempts to copy 295 bytes into it. It causes memory corruption.\n\nThis issue affects Apache ORC C++ library: through 1.8.8, from 1.9.0 through 1.9.5, from 2.0.0 through 2.0.4, from 2.1.0 through 2.1.1.\n\nUsers are recommended to upgrade to version 1.8.9, 1.9.6, 2.0.5, and 2.1.2, which fix the issue.","status":"published","published":"2025-05-14T13:11:36.329Z","modified":"2026-10-28T02:30:26.87815856Z","cvss":[{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/S:N/RE:M/U:Amber","level":"medium"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T15:44:49.707645Z"},{"id":"AZL-61829","title":"CVE-2025-47436 affecting package orc 0.4.31-4","description":"Heap-based Buffer Overflow vulnerability in Apache ORC.\n\nA vulnerability has been identified in the ORC C++ LZO decompression logic, where specially crafted malformed ORC files can cause the decompressor to allocate a 250-byte buffer but then attempts to copy 295 bytes into it. It causes memory corruption.\n\nThis issue affects Apache ORC C++ library: through 1.8.8, from 1.9.0 through 1.9.5, from 2.0.0 through 2.0.4, from 2.1.0 through 2.1.1.\n\nUsers are recommended to upgrade to version 1.8.9, 1.9.6, 2.0.5, and 2.1.2, which fix the issue.","status":"published","published":"2025-05-14T14:15:30Z","modified":"2026-04-21T04:31:51.160446Z","updated_at":"2026-11-02T15:28:07.805289Z"},{"id":"AZL-61836","title":"CVE-2025-47436 affecting package orc 0.4.39-2","description":"Heap-based Buffer Overflow vulnerability in Apache ORC.\n\nA vulnerability has been identified in the ORC C++ LZO decompression logic, where specially crafted malformed ORC files can cause the decompressor to allocate a 250-byte buffer but then attempts to copy 295 bytes into it. It causes memory corruption.\n\nThis issue affects Apache ORC C++ library: through 1.8.8, from 1.9.0 through 1.9.5, from 2.0.0 through 2.0.4, from 2.1.0 through 2.1.1.\n\nUsers are recommended to upgrade to version 1.8.9, 1.9.6, 2.0.5, and 2.1.2, which fix the issue.","status":"published","published":"2025-05-14T14:15:30Z","modified":"2026-11-05T05:36:30Z","updated_at":"2026-11-05T16:41:21.518778Z"}]}}