XSS in Contec Co., Ltd. M2m Controller Configurable Type Cps-Mcs341*

CVE-2026-82773

Cross-site scripting vulnerability exists in CONPROSYS M2M Gateway Series and CONPROSYS M2M Controller Series. If this vulnerability is exploited, an arbitrary script may be executed on a logged-in user's web browser.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (18.1th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-82773: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-82773?
CVE-2026-82773 is a medium-severity vulnerability in Contec Co., Ltd. M2m Controller Configurable Type Cps-Mcs341*, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-09-14.
How severe is CVE-2026-82773?
Medium severity. CVSS v3 base score is 6.1 out of 10.