CVE-2013-1193 Denial of service in n/a
Remote attackers can cause SSH service outage on Cisco ASA and FWSM devices by repeatedly establishing connections without proper session termination.
- 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-2013-1193?
CVE-2013-1193 is a medium-severity denial of service vulnerability in Cisco Adaptive Security Appliance Software, published on 16 Apr 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Secure Shell (SSH) implementation on Cisco Adaptive Security Appliances (ASA) devices, and in Cisco Firewall Services Module (FWSM), does not properly terminate sessions, which allows remote attackers to cause a denial of service (SSH service outage) by repeatedly establishing SSH connections, aka Bug IDs CSCue63881, CSCuf51892, CSCue78671, and CSCug26937.
Which versions are affected by CVE-2013-1193?
It affects 2 products.
Products include Cisco Adaptive Security Appliance Software, Cisco Firewall Services Module.
How do I fix CVE-2013-1193?
No fix has been published for CVE-2013-1193 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-2013-1193 being exploited?
There is no known exploitation of CVE-2013-1193 in the wild and no public exploit code.
Other vulnerabilities in Cisco Adaptive Security Appliance Software
- CVE-2025-20333 Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Buffer Overflow
- CVE-2016-6366 Cisco Adaptive Security Appliance (ASA) SNMP Buffer Overflow
- CVE-2026-20349 Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Heap Inspection
- CVE-2024-20353 Cisco ASA and FTD Denial of Service
- CVE-2016-6367 Cisco Adaptive Security Appliance (ASA) CLI Remote Code Execution
All Cisco Adaptive Security Appliance Software vulnerabilities
Sources
Also known as GHSA-m4wj-9f5c-24h8.