A vulnerability in the Remote Access SSL VPN functionality of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to exhaust device memory resulting in a denial of service (DoS) condition to new Remote Access SSL VPN connections. This does not affect the management interface, though it may become temporarily unresponsive. This vulnerability is due to trusting user input without validation. An attacker could exploit this vulnerability by sending crafted packets to the Remote Access SSL VPN server. A successful exploit could allow the attacker to cause the device web interface to stop responding, resulting in a DoS condition.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.6, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 2 products from cisco, from cisco organizations running these solutions should prioritize assessment and patching.
Reported in 2026, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2026-03-04T18:16:25.840
2026-04-16T20:28:00.410
Analyzed
CVSSv3.1: 8.6 (HIGH)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | cisco | adaptive_security_appliance_software | < 9.16.4.85 | Yes |
| Operating System | cisco | adaptive_security_appliance_software | < 9.18.4.66 | Yes |
| Operating System | cisco | adaptive_security_appliance_software | < 9.20.4 | Yes |
| Operating System | cisco | adaptive_security_appliance_software | < 9.22.2.4 | Yes |
| Operating System | cisco | adaptive_security_appliance_software | < 9.23.1.7 | Yes |
| Application | cisco | firepower_threat_defense_software | < 7.0.9 | Yes |
| Application | cisco | firepower_threat_defense_software | < 7.2.11 | Yes |
| Application | cisco | firepower_threat_defense_software | < 7.4.3 | Yes |
| Application | cisco | firepower_threat_defense_software | < 7.6.4 | Yes |
| Application | cisco | firepower_threat_defense_software | < 7.7.11 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.