Jinan USR IOT Technology Limited (PUSR) USR-W610 RS232/485 to Wi-Fi/Ethernet Converter Use of Hard-coded Credentials

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Summary

CVECVE-2026-7786
StatePUBLISHED
Assignericscert
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-29 18:17:13 UTC
Updated2026-05-29 18:17:13 UTC
DescriptionJinan 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.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.000410000 probability, percentile 0.129400000 (date 2026-05-30)

Problem Types: CWE-798 | CWE-798 CWE-798

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Jinan USR IOT Technology Limited PUSR USR-W610 RS232/485 To Wi-Fi/Ethernet Converter affected 7.03T.07 Not specified

References

ReferenceSourceLinkTags
www.cisa.gov/news-events/ics-advisories/icsa-26-148-02 [email protected] www.cisa.gov
github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-14... [email protected] github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Arun Mane and Omkar Mali reported this vulnerability to CISA. (en)

Additional Advisory Data

Workarounds

CNA: Jinan USR IOT Technology Limited (PUSR) did not respond to CISA's attempts at coordination. Users of PUSR USR-W610 devices are encouraged to contact PUSR and keep their systems up to date.

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