An exploitable out-of-bounds write vulnerability exists in the xlsmergedCells function of libxls 1.4. . 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.

An exploitable out-of-bounds vulnerability exists in the xlsaddCell 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.

An exploitable integer overflow vulnerability exists in the xlsappendSST function of libxls 1.4.A specially crafted XLS file can cause memory corruption resulting in remote code execution.

An exploitable integer overflow vulnerability exists in the xlspreparseWorkSheet 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.

An exploitable integer overflow vulnerability exists in the xlspreparseWorkSheet function of libxls 1.4 when handling a MULRK 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.