CVE-2007-2461 Denial of service in n/a
Remote attackers can cause denial of service in Cisco ASA devices by sending specific DHCP messages when multiple DHCP servers are configured.
- 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-2007-2461?
CVE-2007-2461 is a high-severity denial of service vulnerability in Cisco Adaptive Security Appliance Software, published on 2 May 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The DHCP relay agent in Cisco Adaptive Security Appliance (ASA) and PIX 7.2 allows remote attackers to cause a denial of service (dropped packets) via a DHCPREQUEST or DHCPINFORM message that causes multiple DHCPACK messages to be sent from DHCP servers to the agent, which consumes the memory allocated for a local buffer. NOTE: this issue only occurs when multiple DHCP servers are used.
Which versions are affected by CVE-2007-2461?
It affects 2 products.
Products include Cisco Adaptive Security Appliance Software, Cisco Pix.
How do I fix CVE-2007-2461?
No fix has been published for CVE-2007-2461 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-2007-2461 being exploited?
There is no known exploitation of CVE-2007-2461 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-vwjv-mqrc-fc89.