CVE-2020-13586: Softmaker Planmaker 2021

High severity, CVSS 7.8. EPSS: 1.5% chance of exploitation in the next 30 days.

A memory corruption vulnerability exists in the Excel Document SST Record 0x00fc functionality of SoftMaker Software GmbH SoftMaker Office PlanMaker 2021 (Revision 1014). A specially crafted malformed file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Affected products

• Softmaker Planmaker 2021: version 1014 only

Published 2021-02-04. Last modified 2026-06-17.