How severe is CVE-2020-28594?

CVE-2020-28594 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-2020-28594 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28594?

CVE-2020-28594 affects Prusa3d Prusaslicer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-28594?

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-2020-28594 published?

CVE-2020-28594 was published on 2021-08-17 and last updated on 2026-06-17.

CVE-2020-28594

CVE-2020-28594 is a high-severity vulnerability in Prusa3d Prusaslicer 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-416.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Prusa3d Prusaslicer
Published: 2021-08-17
Last modified: 2026-06-17

Description

A use-after-free vulnerability exists in the _3MF_Importer::_handle_end_model() functionality of Prusa Research PrusaSlicer 2.2.0 and Master (commit 4b040b856). A specially crafted 3MF file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

Frequently asked questions

What is CVE-2020-28594?: A use-after-free vulnerability exists in the _3MF_Importer::_handle_end_model() functionality of Prusa Research PrusaSlicer 2.2.0 and Master (commit 4b040b856). A specially crafted 3MF file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.
How severe is CVE-2020-28594?: CVE-2020-28594 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-2020-28594 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28594?: CVE-2020-28594 affects Prusa3d Prusaslicer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-28594?: 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-2020-28594 published?: CVE-2020-28594 was published on 2021-08-17 and last updated on 2026-06-17.

References

https://talosintelligence.com/vulnerability_reports/TALOS-2020-1218

Affected products (1)

cpe:2.3:a:prusa3d:prusaslicer:2.2.0:-:*:*:*:*:*:*

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