CVE-2017-12111: Libxls Project Libxls

High severity, CVSS 7.8. EPSS: 2.2% chance of exploitation in the next 30 days.

An exploitable out-of-bounds vulnerability exists in the xls_addCell function of libxls 1.4. A specially crafted XLS file with a formula record can cause memory corruption resulting in remote code execution. An attacker can send a malicious XLS file to trigger this vulnerability.

Affected products

• Libxls Project Libxls: version 1.4 only

Published 2017-11-20. Last modified 2026-06-17.