How severe is CVE-2020-13586?

CVE-2020-13586 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-13586 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-13586?

CVE-2020-13586 affects Softmaker Planmaker 2021. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-13586?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-13586 published?

CVE-2020-13586 was published on 2021-02-04 and last updated on 2026-06-17.

CVE-2020-13586

CVE-2020-13586 is a high-severity vulnerability in Softmaker Planmaker 2021 with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Softmaker Planmaker 2021
Published: 2021-02-04
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2020-13586?: 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.
How severe is CVE-2020-13586?: CVE-2020-13586 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-13586 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-13586?: CVE-2020-13586 affects Softmaker Planmaker 2021. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-13586?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-13586 published?: CVE-2020-13586 was published on 2021-02-04 and last updated on 2026-06-17.

References

https://talosintelligence.com/vulnerability_reports/TALOS-2020-1197

Affected products (1)

cpe:2.3:a:softmaker:planmaker_2021:1014:*:*:*:*:*:*:*

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