CVE-2016-9221 Denial of service in Cisco Mobility Express 2800 Series and 3800 Series Access Points
An unauthenticated adjacent attacker can cause authentication failures in Cisco Mobility Express Access Points configured in local mode at 40 MHz.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2016-9221?
CVE-2016-9221 is a medium-severity denial of service vulnerability in Cisco Mobility Express 2800 Series and 3800 Series Access Points, published on 26 Jan 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A Denial of Service Vulnerability in 802.11 ingress connection authentication handling for the Cisco Mobility Express 2800 and 3800 Access Points (APs) could allow an unauthenticated, adjacent attacker to cause authentication to fail. Affected Products: This vulnerability affects Cisco Mobility Express 2800 Series and 3800 Series Access Points when configured in local mode in 40 MHz. More Information: CSCvb33575. Known Affected Releases: 8.2(121.12) 8.4(1.82). Known Fixed Releases: 8.2(131.2) 8.2(131.3) 8.2(131.4) 8.2(141.0) 8.3(104.53) 8.3(104.54) 8.4(1.80) 8.4(1.85).
Weakness: CWE-399
Which versions are affected by CVE-2016-9221?
It affects 1 product.
Products include Cisco Aironet Access Point Software.
How do I fix CVE-2016-9221?
No fix has been published for CVE-2016-9221 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2016-9221 being exploited?
There is no known exploitation of CVE-2016-9221 in the wild and no public exploit code.
Other vulnerabilities in Cisco Mobility Express 2800 Series and 3800 Series Access Points
- CVE-2017-3831 Auth bypass in Cisco Mobility Express 1800 Access Point Series
- CVE-2022-20622 Cisco Embedded Wireless Controller with Catalyst Access Points IP Flood Denial of Service Vulnerability
- CVE-2018-0234 Denial of service in Cisco Aironet 1810, 1830, and 1850 Series Access Points
- CVE-2016-1419 Denial of service in n/a
- CVE-2016-6362 Privilege escalation in n/a
Sources
Also known as GHSA-h84g-xq42-7q7f.