5
CVSSv2

CVE-2021-34791

Published: 27/10/2021 Updated: 07/11/2023
CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10
CVSS v3 Base Score: 5.3 | Impact Score: 1.4 | Exploitability Score: 3.9
VMScore: 445
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N

Vulnerability Summary

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 malicious user 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.

Vulnerability Trend

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cisco firepower threat defense

cisco adaptive security appliance

cisco adaptive security appliance software

cisco asa 5512-x firmware 009.008

cisco asa 5512-x firmware 009.015

cisco asa 5505 firmware 009.008

cisco asa 5505 firmware 009.015

cisco asa 5515-x firmware 009.008

cisco asa 5515-x firmware 009.015

cisco asa 5525-x firmware 009.008

cisco asa 5525-x firmware 009.015

cisco asa 5545-x firmware 009.008

cisco asa 5545-x firmware 009.015

cisco asa 5555-x firmware 009.008

cisco asa 5555-x firmware 009.015

cisco asa 5580 firmware 009.008

cisco asa 5580 firmware 009.015

cisco asa 5585-x firmware 009.008

cisco asa 5585-x firmware 009.015

Vendor Advisories

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 ...