Multiple vulnerabilities in the Application Level Gateway (ALG) for the Network Address Translation (NAT) feature of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass the ALG and open unauthorized connections with a host located behind the ALG. For more information about these vulnerabilities, see the Details section of this advisory. Note: These vulnerabilities have been publicly discussed as NAT Slipstreaming.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 4.7, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required and does not require pre-existing privileges . The vulnerability impacts limited integrity, for affected systems. Impacting 19 products from cisco, from cisco, from cisco and 16 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2021, 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.
2021-10-27T19:15:08.457
2024-11-21T06:11:12.753
Modified
CVSSv3.1: 4.7 (MEDIUM)
AV:N/AC:L/Au:N/C:N/I:P/A:N
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | cisco | adaptive_security_appliance | < 9.8.4.40 | Yes |
| Application | cisco | firepower_threat_defense | < 6.4.0.12 | Yes |
| Application | cisco | firepower_threat_defense | < 6.6.5 | Yes |
| Application | cisco | firepower_threat_defense | < 6.7.0.2 | Yes |
| Operating System | cisco | adaptive_security_appliance_software | < 9.12.4.18 | Yes |
| Operating System | cisco | adaptive_security_appliance_software | < 9.14.2.15 | Yes |
| Operating System | cisco | adaptive_security_appliance_software | < 9.15.1.15 | Yes |
| Operating System | cisco | asa_5512-x_firmware | 009.008 | Yes |
| Operating System | cisco | asa_5512-x_firmware | 009.015 | Yes |
| Hardware | cisco | asa_5512-x | - | No |
| Operating System | cisco | asa_5505_firmware | 009.008 | Yes |
| Operating System | cisco | asa_5505_firmware | 009.015 | Yes |
| Hardware | cisco | asa_5505 | - | No |
| Operating System | cisco | asa_5515-x_firmware | 009.008 | Yes |
| Operating System | cisco | asa_5515-x_firmware | 009.015 | Yes |
| Hardware | cisco | asa_5515-x | - | No |
| Operating System | cisco | asa_5525-x_firmware | 009.008 | Yes |
| Operating System | cisco | asa_5525-x_firmware | 009.015 | Yes |
| Hardware | cisco | asa_5525-x | - | No |
| Operating System | cisco | asa_5545-x_firmware | 009.008 | Yes |
| Operating System | cisco | asa_5545-x_firmware | 009.015 | Yes |
| Hardware | cisco | asa_5545-x | - | No |
| Operating System | cisco | asa_5555-x_firmware | 009.008 | Yes |
| Operating System | cisco | asa_5555-x_firmware | 009.015 | Yes |
| Hardware | cisco | asa_5555-x | - | No |
| Operating System | cisco | asa_5580_firmware | 009.008 | Yes |
| Operating System | cisco | asa_5580_firmware | 009.015 | Yes |
| Hardware | cisco | asa_5580 | - | No |
| Operating System | cisco | asa_5585-x_firmware | 009.008 | Yes |
| Operating System | cisco | asa_5585-x_firmware | 009.015 | Yes |
| Hardware | cisco | asa_5585-x | - | No |
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.