CVE-2021-34087
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 can be used for clickjacking.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.81%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 can be used for clickjacking. This includes the settings page.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
- EPSS
- 0.81% probability · 57th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-1021
- Affected
- ultimaker/ultimaker s3 firmware · ultimaker/ultimaker s5 firmware · ultimaker/ultimaker 3 firmware
- Source
- cve@mitre.org
EPSS 0.8% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://kth.diva-portal.org/smash/get/diva2:1623489/FULLTEXT01.pdfTechnical Description, Third Party 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-s3Product, Vendor Advisory
- https://ultimaker.com/3d-printers/ultimaker-s5Product, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.