Buffer overflow in Apache Orc
CVE-2025-47436
Heap-based Buffer Overflow vulnerability in Apache ORC. A 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 t…
Vulnerability class: Buffer Overflow
EPSS: 0.005 (36.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Apache Orc
- Apache Software Foundation Orc — versions 0, 1.9.0, 2.0.0
Weakness classification (CWE)
References
- security@apache.org (vendor-advisory, Third Party Advisory)
- security@apache.org (Vendor Advisory, mailing-list, Mailing List)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-47436?
- CVE-2025-47436 is a critical-severity vulnerability in Apache Orc, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2025-05-14.
- How severe is CVE-2025-47436?
- Critical severity. CVSS v3 base score is 9.8 out of 10.