Executive Summary
In February 2026, multiple critical vulnerabilities were identified in Jinan USR IOT Technology Limited's USR-W610 serial device server, affecting firmware versions up to and including 3.1.1.0. These vulnerabilities include weak password requirements, cleartext transmission of sensitive information, insufficiently protected credentials, and missing authentication for critical functions. Exploitation could lead to authentication bypass, denial-of-service conditions, or unauthorized access to user credentials, including administrative accounts. (windowsforum.com)
The USR-W610 is widely deployed in industrial environments to bridge legacy serial devices with IP-based networks. Given the device's role in critical manufacturing sectors, these vulnerabilities pose significant risks, including potential unauthorized process changes, production downtime, and safety incidents. (windowsforum.com)
Why This Matters Now
The USR-W610's vulnerabilities highlight the urgent need for robust security measures in industrial IoT devices, especially those bridging legacy systems with modern networks. Organizations must prioritize securing such devices to prevent potential disruptions and unauthorized access.
Attack Path Analysis
An attacker exploits the USR-W610's vulnerabilities to gain initial access, escalates privileges by obtaining administrative credentials, moves laterally within the network, establishes command and control channels, exfiltrates sensitive data, and causes operational disruptions.
Kill Chain Progression
Initial Compromise
Description
The attacker exploits vulnerabilities in the USR-W610 device, such as weak password requirements and cleartext transmission of sensitive information, to gain unauthorized access.
Related CVEs
CVE-2026-25715
CVSS 9.8The web management interface allows the administrator username and password to be set to blank values, effectively disabling authentication and allowing any network-adjacent attacker to gain full administrative control without credentials.
Affected Products:
Jinan USR IOT Technology Limited (PUSR) USR-W610 – <=3.1.1.0
Exploit Status:
no public exploitCVE-2026-24455
CVSS 7.5The embedded web interface does not support HTTPS/TLS for authentication and uses HTTP Basic Authentication, exposing user credentials to passive interception by attackers on the same network.
Affected Products:
Jinan USR IOT Technology Limited (PUSR) USR-W610 – <=3.1.1.0
Exploit Status:
no public exploitCVE-2026-26049
CVSS 5.7The web management interface renders passwords in a plaintext input field, potentially exposing administrator credentials to unauthorized observation via shoulder surfing, screenshots, or browser form caching.
Affected Products:
Jinan USR IOT Technology Limited (PUSR) USR-W610 – <=3.1.1.0
Exploit Status:
no public exploitCVE-2026-26048
CVSS 7.5The Wi-Fi router is vulnerable to de-authentication attacks due to the absence of Management Frame Protection, allowing attackers to cause unauthorized disruptions and create a denial-of-service condition.
Affected Products:
Jinan USR IOT Technology Limited (PUSR) USR-W610 – <=3.1.1.0
Exploit Status:
no public exploit
MITRE ATT&CK® Techniques
Techniques identified for SEO/filtering; may be expanded with full STIX/TAXII enrichment later.
Valid Accounts
Unsecured Credentials: Credentials in Files
Network Sniffing
Network Denial of Service
Application Layer Protocol
Potential Compliance Exposure
Mapping incident impact across multiple compliance frameworks.
PCI DSS 4.0 – Strong Authentication for Users
Control ID: 8.3.1
NYDFS 23 NYCRR 500 – Cybersecurity Policy
Control ID: 500.03
DORA – ICT Risk Management Framework
Control ID: Article 6
CISA ZTMM 2.0 – Identity and Access Management
Control ID: 3.1
NIS2 Directive – Cybersecurity Risk Management Measures
Control ID: Article 21
Sector Implications
Industry-specific impact of the vulnerabilities, including operational, regulatory, and cloud security risks.
Industrial Automation
Critical Manufacturing sector faces severe operational disruption as USR-W610 IoT vulnerabilities enable authentication bypass, credential theft, and denial-of-service attacks on industrial control systems.
Utilities
Power grid and utility infrastructure using vulnerable IoT devices risk complete administrative takeover through cleartext credential transmission and missing authentication protections.
Telecommunications
Network infrastructure compromised by end-of-life USR-W610 devices allowing unauthorized access to communication systems through weak password requirements and unencrypted management interfaces.
Oil/Energy/Solar/Greentech
Energy sector operations vulnerable to coordinated attacks exploiting IoT device weaknesses, potentially disrupting power generation and distribution through management frame protection bypass.
Sources
- Jinan USR IOT Technology Limited (PUSR) USR-W610https://www.cisa.gov/news-events/ics-advisories/icsa-26-050-03Verified
Frequently Asked Questions
Cloud Native Security Fabric Mitigations and ControlsCNSF
Aviatrix Zero Trust CNSF is pertinent to this incident as it could likely limit the attacker's ability to escalate privileges, move laterally, and exfiltrate data by enforcing strict segmentation and identity-aware policies.
Control: Cloud Native Security Fabric (CNSF)
Mitigation: While Aviatrix CNSF may not prevent the initial exploitation of device vulnerabilities, it could likely limit the attacker's ability to leverage this access to compromise other network segments.
Control: Zero Trust Segmentation
Mitigation: Aviatrix Zero Trust Segmentation could likely constrain the attacker's ability to escalate privileges by enforcing strict access controls and limiting administrative access to authorized identities.
Control: East-West Traffic Security
Mitigation: Aviatrix East-West Traffic Security could likely limit the attacker's lateral movement by enforcing strict segmentation and monitoring intra-network communications.
Control: Multicloud Visibility & Control
Mitigation: Aviatrix Multicloud Visibility & Control could likely detect and disrupt unauthorized command and control channels by providing comprehensive monitoring and control over network traffic.
Control: Egress Security & Policy Enforcement
Mitigation: Aviatrix Egress Security & Policy Enforcement could likely limit data exfiltration by controlling and monitoring outbound traffic to external destinations.
While Aviatrix CNSF may not prevent all forms of operational disruption, its segmentation and traffic controls could likely limit the scope and impact of such attacks.
Impact at a Glance
Affected Business Functions
- Network Management
- Remote Access Control
Estimated downtime: N/A
Estimated loss: N/A
Administrator credentials and network configuration data
Recommended Actions
Key Takeaways & Next Steps
- • Implement strong password policies and enforce complex credentials to mitigate weak password vulnerabilities.
- • Enable encrypted communication protocols, such as HTTPS/TLS, to protect sensitive information during transmission.
- • Apply zero trust segmentation to limit lateral movement by restricting device-to-device communication based on identity and policy.
- • Deploy intrusion prevention systems (IPS) to detect and block exploit attempts targeting known vulnerabilities.
- • Establish continuous monitoring and anomaly detection mechanisms to identify and respond to unauthorized access and data exfiltration attempts.
