CVE-2017-12108: Libxls Project Libxls

High severity, CVSS 8.8. EPSS: 2.7% chance of exploitation in the next 30 days.

An exploitable integer overflow vulnerability exists in the xls_preparseWorkSheet function of libxls 1.4 when handling a MULBLANK record. A specially crafted XLS file can cause a memory corruption resulting in remote code execution. An attacker can send malicious XLS file to trigger this vulnerability.

Affected products

• Libxls Project Libxls: version 1.4 only

Published 2018-04-24. Last modified 2026-06-17.