What is CVE-2020-12843?

CVE-2020-12843 is a critical-severity vulnerability in Gogogate Ismartgate Pro, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2020-09-24.

How severe is CVE-2020-12843?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Arbitrary file upload in Gogogate Ismartgate Pro

CVE-2020-12843

ismartgate PRO 1.5.9 is vulnerable to malicious file uploads via the form for uploading sounds to garage doors. The magic bytes for WAV must be used.

Vulnerability class: Unrestricted File Upload

Published 2020-09-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (69.5th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Gogogate Ismartgate Pro
Gogogate Ismartgate Pro Firmware — versions 1.5.9

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

ismartgate.com/secure-garage-door/ (Product, Vendor Advisory)
kth.diva-portal.org/smash/get/diva2:1464458/FULLTEXT01.pdf (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-12843?: CVE-2020-12843 is a critical-severity vulnerability in Gogogate Ismartgate Pro, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2020-09-24.
How severe is CVE-2020-12843?: Critical severity. CVSS v3 base score is 9.8 out of 10.