CVE-2020-13544
mediumpriority · track · 32EPSS 0.016 · 76 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–8.8
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
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references (5)
External citations — patches, advisories, analysis.
- https://nvd.nist.gov/vuln/detail/CVE-2020-13544cnnvd
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1161cnnvd
- https://www.softmaker.com/en/softmaker-officePatchcnnvd
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1161enisa_euvd
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1161ExploitThird Party Advisorynvd
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