# CVE-2016-9209: Security feature bypass in Cisco FirePOWER

> Unauthenticated remote attackers can bypass file blocking mechanisms in Cisco FirePOWER systems to download restricted files.

- **Severity:** Medium 4.3 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 14 Dec 2016
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-w647-wmr2-37vx

## What is CVE-2016-9209?

CVE-2016-9209 is a medium-severity vulnerability in Cisco FirePOWER, published on 14 Dec 2016. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A vulnerability in TCP processing in Cisco FirePOWER system software could allow an unauthenticated, remote attacker to download files that would normally be blocked. Affected Products: The following Cisco products are vulnerable: Adaptive Security Appliance (ASA) 5500-X Series with FirePOWER Services, Advanced Malware Protection (AMP) for Networks - 7000 Series Appliances, Advanced Malware Protection (AMP) for Networks - 8000 Series Appliances, FirePOWER 7000 Series Appliances, FirePOWER 8000 Series Appliances, FirePOWER Threat Defense for Integrated Services Routers (ISRs), Next Generation Intrusion Prevention System (NGIPS) for Blue Coat X-Series, Sourcefire 3D System Appliances, Virtual Next-Generation Intrusion Prevention System (NGIPSv) for VMware. More Information: CSCvb20102. Known Affected Releases: 2.9.7.10.

Weakness: CWE-254

## Which versions are affected by CVE-2016-9209?

It affects 1 product.


Products: Cisco Firepower Services for Adaptive Security Appliance.

## How do I fix CVE-2016-9209?

No fix has been published for CVE-2016-9209 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-9209 being exploited?

There is no known exploitation of CVE-2016-9209 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-9209 and fix it if it is affected.

What it is: CVE-2016-9209 is a medium-severity vulnerability in Cisco FirePOWER, published on 14 Dec 2016. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2016-9209 in the wild and no public exploit code.

Affected product: Cisco FirePOWER. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2016-9209/ (Markdown: https://insights.sbomify.com/CVE-2016-9209/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-9209
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-9209
- OSV: https://osv.dev/vulnerability/CVE-2016-9209

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-9209/
Summaries are generated and may contain mistakes; the official description above is the record.