What’s Vulnerable › Vulnerabilities

CVE-2020-13544

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-01-06 · updated 2026-06-17
• Weakness: CWE-194

Description

An exploitable sign extension vulnerability exists in the TextMaker document parsing functionality of SoftMaker Office 2021’s TextMaker application. A specially crafted document can cause the document parser to sign-extend a length used to terminate a loop, which can later result in the loop’s index being used to write outside the bounds of a heap buffer during the reading of file data. An attacker can entice the victim to open a document to trigger this vulnerability.

Affected products

• Softmaker: 2021

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2020-1161
• https://talosintelligence.com/vulnerability_reports/TALOS-2020-1161

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