CVE-2016-6386 Denial of service in n/a
Remote attackers can cause device reload via fragmented IPv4 packets in Cisco IOS XE, requiring a patch to prevent denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2016-6386?
CVE-2016-6386 is a high-severity denial of service vulnerability in Cisco Ios Xe, published on 5 Oct 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Cisco IOS XE 3.1 through 3.17 and 16.1 on 64-bit platforms allows remote attackers to cause a denial of service (data-structure corruption and device reload) via fragmented IPv4 packets, aka Bug ID CSCux66005.
Weakness: CWE-399
Which versions are affected by CVE-2016-6386?
It affects 6 products.
Products include Cisco Ios Xe, Cisco Ios Xe 16.1, Cisco Ios Xe 3.2ja, Cisco Ios Xe 3.3sg, Cisco Ios Xe 3.3xo, Cisco Ios Xe 3.4sg.
How do I fix CVE-2016-6386?
No fix has been published for CVE-2016-6386 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-2016-6386 being exploited?
There is no known exploitation of CVE-2016-6386 in the wild and no public exploit code.
Other vulnerabilities in Cisco Ios Xe
- CVE-2023-20198 Cisco IOS XE Web UI Privilege Escalation
- CVE-2018-0151 Cisco IOS Software and Cisco IOS XE Software Quality of Service Remote Code Execution
- CVE-2023-20273 Cisco IOS XE Web UI Command Injection
- CVE-2025-20188 Hardcoded credentials in Cisco IOS XE Software
- CVE-2021-34770 Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Remote Code Execution Vulnerability
Sources
Also known as GHSA-hrr9-53wq-6vh5.