CircuitWerkes Sicon-8 Client-Side Authentication Read-Only Bypass

Description

CircuitWerkes Sicon-8, a hardware device used for managing electrical devices, ships with a web-based front-end controller and implements an authentication mechanism in JavaScript that is run in the context of a user's web browser.

Scores

EPSS (exploitation in 30 days)

1.3% · top 30% of all CVEs (6 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.

Weakness

• n/a

Affected products

• n/a

  • affected n/a

What to do

Workaround: Users of the Sicon-8 should not expose the web-based management console to untrusted networks.

Exploitation: Because authentication is implemented as a JavaScript function that merely redirects the user away from the web app interface, rather than relying on session tokens or other more modern access controls, an attacker can navigate to http://address:port/index.htm using a standard web browser, and just before the page is fully rendered, hit the escape key to prevent the window.location redirect from executing. Once the page is rendered, the attacker can read all of the configured labels of a Sicon-8 device and retrieve the status of the labeled interfaces.

References (1)

• https://blog.rapid7.com/2019/03/12/r7-2019-01-circuitwerkes-sicon-8-client-side-authentication-read-only-bypass-cve-2019-5616/ (opens in a new tab)x_refsource_MISCx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2019-5616](https://trackcve.app/badge/CVE-2019-5616.svg)](https://trackcve.app/cve/CVE-2019-5616)

Record last updated 16 Sept 2024, 17:34 UTC.