Vulnerability in Jinan Usr Iot Technology Limited (Pusr) Usr-W610 Rs232/485 To Wi-Fi/ethernet Converter

CVE-2026-7786

Jinan USR IOT Technology Limited (PUSR) USR-W610 RS232/485 to Wi-Fi/Ethernet Converter device firmware contains plaintext administrative credentials embedded in the firmware image. These credentials can be extracted through firmware analysis and used to authenticate to device services.

Published · last modified .

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: 0.005 (41.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 41.4% 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-2026-7786: held from 0.004 to 0.005.

EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-7786?
CVE-2026-7786 is a critical-severity vulnerability in Jinan Usr Iot Technology Limited (Pusr) Usr-W610 Rs232/485 To Wi-Fi/ethernet Converter, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2026-05-29.
How severe is CVE-2026-7786?
Critical severity. CVSS v3 base score is 9.8 out of 10.