CVE-2013-5560 Denial of service in n/a

What is CVE-2013-5560?

CVE-2013-5560 is a medium-severity denial of service vulnerability in Cisco Adaptive Security Appliance Software, published on 13 Nov 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The IPv6 implementation in Cisco Adaptive Security Appliance (ASA) Software 9.1.3 and earlier, when NAT64 or NAT66 is enabled, does not properly process NAT rules, which allows remote attackers to cause a denial of service (device reload) via crafted packets, aka Bug ID CSCue34342.

Weakness: CWE-20

Which versions are affected by CVE-2013-5560?

It affects 1 product.

Products include Cisco Adaptive Security Appliance Software.

How do I fix CVE-2013-5560?

No fix has been published for CVE-2013-5560 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-2013-5560 being exploited?

There is no known exploitation of CVE-2013-5560 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 Exploited Critical 9.9
• CVE-2016-6366 Cisco Adaptive Security Appliance (ASA) SNMP Buffer Overflow Exploited High 8.8
• CVE-2026-20349 Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Heap Inspection Exploited High 8.6
• CVE-2024-20353 Cisco ASA and FTD Denial of Service Exploited High 8.6
• CVE-2016-6367 Cisco Adaptive Security Appliance (ASA) CLI Remote Code Execution Exploited High 7.8

All Cisco Adaptive Security Appliance Software vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-6hr2-3hj3-x5gw.