What’s Vulnerable › Vulnerabilities

CVE-2019-12254: TECSON/GOK: Improper Authentication and Access Control on multiple devices

• Severity: critical (CVSS 10.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-05-06 · updated 2026-06-17
• Weakness: CWE-287

Description

In multiple Tecson Tankspion and GOKs SmartBox 4 products the affected application doesn't properly restrict access to an endpoint that is responsible for saving settings, to a unauthenticated user with limited access rights. Based on the lack of adequately implemented access-control rules, by accessing a specific uniform resource locator (URL) on the web server, a malicious user is able to change the application settings without authenticating at all, which violates originally laid ACL rules.

Affected products

• GOK Smartbox 4 Lan Firmware: all versions
• GOK Smartbox 4 Lan Pro Firmware: all versions
• TECSON E-Litro Net Firmware: all versions
• TECSON Lx-Net Firmware: all versions
• TECSON Lx-Q-Net Firmware: all versions

References

• https://cert.vde.com/en/advisories/VDE-2019-012/
• https://cert.vde.com/en/advisories/VDE-2019-012/

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