What’s Vulnerable › Vulnerabilities

CVE-2026-82773

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-14 · updated 2026-09-16
• Weakness: CWE-79

Description

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.

Affected products

• Contec Co., Ltd. M2M Controller Configurable type CPS-MCS341*: before 4.1.0 — fixed in 4.1.0
• Contec Co., Ltd. M2M Controller Integrated Type CPS-MC341: before 4.1.0 — fixed in 4.1.0
• Contec Co., Ltd. M2M Gateway Configurable type CPS-MGS341*: before 4.1.0 — fixed in 4.1.0
• Contec Co., Ltd. M2M Gateway Integrated Type CPS-MG341*: before 4.1.0 — fixed in 4.1.0

How to fix

Upgrade to a fixed version: Contec Co., Ltd. M2M Controller Configurable type CPS-MCS341* 4.1.0; Contec Co., Ltd. M2M Controller Integrated Type CPS-MC341 4.1.0; Contec Co., Ltd. M2M Gateway Configurable type CPS-MGS341* 4.1.0; Contec Co., Ltd. M2M Gateway Integrated Type CPS-MG341* 4.1.0. Check the vendor advisory for mitigations.

References

• https://jvn.jp/en/vu/JVNVU96551518/
• https://www.contec.com/api/downloadlogger?download=/-/media/Contec/support/security-info/2026/contec_security_cps_26091000_en.pdf

Get alerted when CVE-2026-82773 or the next vulnerability affects your stack