Heap-based buffer overflow in ORC - CVE-2025-47436
Published: August 5, 2025
Vulnerability identifier: #VU113619
CSH Severity: Low
CVSS v4: 6 [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]
CVE-ID: CVE-2025-47436
CWE-ID: CWE-122
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to cause memory corruption.
The vulnerability exists due to a boundary error 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. A local privileged user can pass specially crafted data to the application, trigger a heap-based buffer overflow and cause memory corruption.
Affected software
ORC
IBM Observability with Instana
IBM Observability with Instana
How to mitigate CVE-2025-47436
Cybersecurity Help is currently unaware of any official solution to address this vulnerability..
ORC - addressed in versions 1.8.9, 1.9.6, 2.0.5, 2.1.2
IBM Observability with Instana - update to 1.0.299
IBM Observability with Instana - update to 1.0.299