CVE-2021-34086
HIGHCVSS 8.8/10EPSS 0.53%
Last modified
CVE-2021-34086 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. In Ultimaker S3 3D printer, Ultimaker S5 3D printer, Ultimaker 3 3D printer S-line through 6.3 and Ultimaker 3 through 5.2.16, the local webserver hosts APIs vulnerable to CSRF. They do not verify incoming requests.. EPSS estimates a 0.53% chance of exploitation in the next 30 days.
Description
In Ultimaker S3 3D printer, Ultimaker S5 3D printer, Ultimaker 3 3D printer S-line through 6.3 and Ultimaker 3 through 5.2.16, the local webserver hosts APIs vulnerable to CSRF. They do not verify incoming requests.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ultimaker | Ultimaker S3 Firmware | <= 6.3 |
| Ultimaker | Ultimaker S5 Firmware | <= 6.3 |
| Ultimaker | Ultimaker 3 Firmware | <= 5.2.16 |
References
- https://kth.diva-portal.org/smash/get/diva2:1623489/FULLTEXT01.pdfTechnical Description, Third Party Advisory
- https://ultimaker.com/3d-printers/ultimaker-3Product, Vendor Advisory
- https://ultimaker.com/3d-printers/ultimaker-s3Product, Vendor Advisory
- https://ultimaker.com/3d-printers/ultimaker-s5Product, Vendor Advisory
- https://kth.diva-portal.org/smash/get/diva2:1623489/FULLTEXT01.pdfTechnical Description, Third Party Advisory
- https://ultimaker.com/3d-printers/ultimaker-3Product, Vendor Advisory
- https://ultimaker.com/3d-printers/ultimaker-s3Product, Vendor Advisory
- https://ultimaker.com/3d-printers/ultimaker-s5Product, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-34086?
In Ultimaker S3 3D printer, Ultimaker S5 3D printer, Ultimaker 3 3D printer S-line through 6.3 and Ultimaker 3 through 5.2.16, the local webserver hosts APIs vulnerable to CSRF. They do not verify incoming requests.
How severe is CVE-2021-34086?
CVE-2021-34086 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.
How do I fix CVE-2021-34086?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-34086?
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Scan your code nowSource: NVD / NIST