Description
A vulnerability in the TCP processing engine of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to the improper handling of TCP traffic. An attacker could exploit this vulnerability by sending a specific sequence of packets at a high rate through an affected device. A successful exploit could allow the attacker to temporarily disrupt traffic through the device while it reboots.
Affected products
cisco: adaptive security appliance software; cisco: asa 5505; cisco: asa 5510; cisco: asa 5512-x; cisco: asa 5515-x; cisco: asa 5520; cisco: asa 5525-x; cisco: asa 5540; cisco: asa 5545-x; cisco: asa 5550; cisco: asa 5555-x; cisco: asa 5580; cisco: asa 5585-x; cisco: secure firewall threat defense
References4
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/c… Vendor Advisory
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/c… Vendor Advisory
- www.securityfocus.com/bid/108160 Third Party AdvisoryVDB Entry
- www.securityfocus.com/bid/108160 Third Party AdvisoryVDB Entry
Metrics
- CVSS 3.1
-
8.6
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H - EPSS — exploit probability
- 3% percentile: 85 · as of 10 November 2026
- CWE
- CWE-20
Could this be exploited in your environment?
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