High severity7.5NVD Advisory· Published May 6, 2020· Updated Aug 11, 2026
CVE-2020-3303
CVE-2020-3303
Description
A vulnerability in the Internet Key Exchange version 1 (IKEv1) feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper management of system memory. An attacker could exploit this vulnerability by sending malicious IKEv1 traffic to an affected device. A successful exploit could allow the attacker to cause a DoS condition on the affected device.
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Affected products
6cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:*range: <9.6.4.36
- cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*range: >=9.7,<9.8.4.10
- cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*Range: <6.3.0.5
- Range: n/a
Patches
Vulnerability mechanics
References
1News mentions
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