CVE-2016-9209

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in, but needs a user to act. Limited direct impact.

Exploit odds

1.2% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2016-12-14 00:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 00:55 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.2% in the next 30 days (EPSS).
• Severity: 4.3 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2016-12-14 00:59 UTC

Last modified

2026-06-17 00:55 UTC

Exploit probability

1.2% · EPSS, next 30 days

Weakness

CWE-254

Record status

Modified

Affected

• Cisco Firepower Services For Adaptive Security Appliance 5.3.0
• Cisco Firepower Services For Adaptive Security Appliance 5.4.0
• Cisco Firepower Services For Adaptive Security Appliance 5.4.1
• Cisco Firepower Services For Adaptive Security Appliance 5.4.1.1
• Cisco Firepower Services For Adaptive Security Appliance 5.4.1.2
• Cisco Firepower Services For Adaptive Security Appliance 5.4.1.3
• Cisco Firepower Services For Adaptive Security Appliance 5.4.1.4
• Cisco Firepower Services For Adaptive Security Appliance 5.4.1.5

Attack profile CVSS 3.0 · 4.3

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2016-9209.md and follow it. Check whether this project is affected by CVE-2016-9209. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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