LG webOS CVEs 6317-6320: How TVs Became IoT Attack Vectors — CyberDudeBivash Threat Analysis Report By CyberDudeBivash

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1. Overview

LG’s webOS smart TVs (versions 4 through 7) have been found vulnerable to several critical flaws that allow unauthorized access, privilege escalation, and remote code execution. These vulnerabilities affect a large number of devices, many exposed to the LAN or—even worse—to the public Internet. Attackers can bypass user PIN protections, install privileged accounts, execute commands as root or as privileged system users, and take full control. NVD+3Bitdefender+3TuxCare+3

2. Key Vulnerabilities (CVE IDs)

CVEVulnerabilityAffected OS Versions / ModelsImpact / Attack Vector
CVE-2023-6317Authorization bypass in secondscreen.gateway: attacker can create privileged account without PIN. Bitdefender+2NVD+2webOS 4.9.7 → 5.x; 6.x; 7.x on specific LG models (OLED55CXPUA, LG43UM7000PLA, etc.) Bitdefender+2TuxCare+2Attacker only needs LAN access; no user interaction required to create admin user.
CVE-2023-6318Privilege escalation following unauthorized account creation; allows root access. Bitdefender+1Same OS/model families. Bitdefender+1After initial access via CVE-6317, attacker can gain full control.
CVE-2023-6319Command injection via library responsible for music-lyrics display (attachedstoragemanager or similar) → root code execution. Bitdefender+2TuxCare+2webOS 4-7 as above. Bitdefender+1Attackers can execute arbitrary commands (code execution).
CVE-2023-6320Authenticated command injection via com.webos.service.connectionmanager/tv/setVlanStaticAddress endpoint, as dbus user. Bitdefender+2TuxCare+2webOS 5-7 etc. Bitdefender+1Remote attacker (with authenticated request context) may gain powerful privileges.

3. Scope & Exposure

  • Large number of devices affected: Bitdefender / TuxCare / Field Effect report over 90,000 LG TVs exposed to these vulnerabilities. TuxCare+2Field Effect+2

  • Some vulnerable services are meant to be LAN-only, but many TVs have these services exposed on public networks (due to misconfiguration or intentional exposure). This increases risk significantly. Bitdefender+2TuxCare+2

  • Models and firmware versions across webOS 4.x, 5.x, 6.x, 7.x are impacted. Patches were released in March 2024 by LG. Bitdefender+2Field Effect+2

4. Severity & Risk Assessment

DimensionRating / Notes
Remote exploitabilityHigh – LAN access enough for some flaws; public exposure possible in misconfigured devices.
Privilege escalationHigh – attackers can reach root or privileged users.
User interaction requiredLow – many flaws don’t need user input after vulnerability is present.
PersistenceModerate-High – with root, attacker can install backdoors, firmware modifications.
Potential impactHigh – device takeover, spying, using TV in botnets, lateral move into local network.

5. Mitigation & What Users / Organizations Should Do

  1. Update Firmware Immediately

  2. Disable Exposed Network Services

    • If possible, disable services meant for smartphone companion / second‐screen that aren’t needed.

    • Ensure the TV is not reachable from the Internet; avoid port forwarding. Use a firewall to block access.

  3. Enable Automatic Updates

    • LG devices often support automatic updates. Enable this so future patches are installed without delay.

  4. Network Segmentation

    • Place smart TVs on separate VLAN or network from sensitive systems (PCs, NAS, IoT). Restrict LAN access.

  5. Monitor Logs / Unusual Behavior

    • Check for new accounts or unexpected PIN bypasses.

    • Scan for strange network traffic from the TV.

  6. Vendor / Enterprise Practices

    • LG should publish clear advisories, provide CVE status and firmware versions.

    • Enterprises using LG smart displays or TVs (conference rooms, etc.) should audit their fleet, apply patches, disable unneeded services.

6. CyberDudeBivash Best Practices & Services

At CyberDudeBivash, we help clients with:

  • IoT fleet audits: identification of vulnerable smart TVs / devices in networks.

  • Vulnerability scanning & alerting for exposed smart-device services.

  • Hardening guidelines: secure configurations, firewalling, patch management.

  • Incident response in case devices are compromised.

Contact us at iambivash@cyberdudebivash.com for a smart home / smart office security assessment.

7. Conclusion

The LG webOS TV vulnerabilities (CVE-2023-6317 through CVE-6320) represent a serious risk—not only to home users, but enterprises and networks using these smart devices. What may seem like “just a TV” can become a beachhead for attackers.

Patch now. Limit exposure. Harden your environment. CyberDudeBivash stands ready with intel, tools, and guidance to help protect your connected world.


  • “Critical LG webOS TV Flaws: Unauthorized Access & Root Takeover Exposed”

  • “LG webOS CVEs 6317-6320: How TVs Became IoT Attack Vectors”


#CyberDudeBivash #LGwebOS #SmartTVVulnerability #CVE2023-6317 #CVE2023-6318 #IoTSecurity #FirmwareUpdate #AuthorizationBypass #RootAccessRisk #ThreatIntel

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