CVE-2015-6327 Denial of service in n/a
Remote attackers can cause a denial of service via crafted ISAKMP UDP packets, requiring administrators to upgrade Cisco ASA software.
- 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-2015-6327?
CVE-2015-6327 is a high-severity denial of service vulnerability in Cisco Adaptive Security Appliance Software, published on 25 Oct 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The IKEv1 implementation in Cisco Adaptive Security Appliance (ASA) software 7.2 and 8.2 before 8.2(5.58), 8.3 and 8.4 before 8.4(7.29), 8.5 through 8.7 before 8.7(1.17), 9.0 before 9.0(4.37), 9.1 before 9.1(6.8), 9.2 before 9.2(4), and 9.3 before 9.3(3) allows remote attackers to cause a denial of service (device reload) via crafted ISAKMP UDP packets, aka Bug ID CSCus94026.
Weakness: CWE-399
Which versions are affected by CVE-2015-6327?
It affects 1 product.
Products include Cisco Adaptive Security Appliance Software.
How do I fix CVE-2015-6327?
No fix has been published for CVE-2015-6327 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-2015-6327 being exploited?
There is no known exploitation of CVE-2015-6327 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-xp9m-x8x2-9jh8.