RCE in Efm Iptime C200
CVE-2026-7833
A weakness has been identified in EFM ipTIME C200 up to 1.092. This vulnerability affects the function sub_408F90 of the file /cgi/iux_set.cgi of the component ApplyRestore Endpoint. This manipulation of the argument RestoreFile causes command injection. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.044 (91.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.023 · newest: 0.044 · change: +0.021
Affected products
- Efm Iptime C200 — versions 1.092
Weakness classification (CWE)
References
- github.com/glkfc/IoT-Vulnerability/blob/main/iptime/c200/sub_409054_vulnerabili… (exploit)
- vuldb.com/submit/807786 (third-party-advisory)
- vuldb.com/vuln/361112 (technical-description, vdb-entry)
- vuldb.com/vuln/361112/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-7833?
- CVE-2026-7833 is a high-severity vulnerability in Efm Iptime C200, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.2/10. Published 2026-05-05.
- How severe is CVE-2026-7833?
- High severity. CVSS v3 base score is 7.2 out of 10.