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CVE-2026-26048 Jinan USR IOT Technology Limited (PUSR) CVE debrief

CVE-2026-26048 affects Jinan USR IOT Technology Limited (PUSR) USR-W610 devices. CISA says the router lacks Management Frame Protection, which allows forged deauthentication and disassociation frames to be sent without authentication or encryption, creating a denial-of-service risk. The advisory also states the product is end-of-life and no patch is planned.

Vendor
Jinan USR IOT Technology Limited (PUSR)
Product
USR-W610
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-02-19
Original CVE updated
2026-02-19
Advisory published
2026-02-19
Advisory updated
2026-02-19

Who should care

Organizations operating PUSR USR-W610 devices, especially teams responsible for wireless availability, OT/ICS networking, and replacing end-of-life equipment.

Technical summary

According to CISA’s CSAF advisory ICSA-26-050-03, the affected USR-W610 devices are missing Management Frame Protection. That weakness allows forged wireless deauthentication and disassociation frames to be accepted or acted on without authentication or encryption, which can disrupt connectivity and cause denial of service. The advisory identifies affected versions as <=3.1.1.0 and notes the product is end-of-life with no vendor patch planned.

Defensive priority

High

Recommended defensive actions

  • Inventory all PUSR USR-W610 devices and confirm whether any are running version 3.1.1.0 or earlier.
  • Treat affected devices as end-of-life risk and plan replacement or retirement, since the advisory states no patch is planned.
  • Reduce wireless exposure where possible and segment affected devices from unnecessary network access.
  • Monitor for unusual deauthentication, disassociation, or repeated wireless disconnect events.
  • Contact PUSR using the advisory’s listed support channel for lifecycle and replacement guidance.
  • Follow CISA ICS recommended practices for defense-in-depth and availability protection.

Evidence notes

This debrief is based only on the supplied CISA CSAF advisory ICSA-26-050-03 and the official links listed with it. The advisory explicitly states that the USR-W610 is vulnerable because Management Frame Protection is absent, allowing forged deauthentication and disassociation frames without authentication or encryption, and that the product is end-of-life with no patch planned. Published and modified dates used here are the CVE/advisory dates supplied in the corpus.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-26048 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-26048

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-26048 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-26048

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-050-03.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-26-050-03

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/topics/industrial-control-systems

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

    Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.