CVEvulnerability
CVE-2021-34790
5.3 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2021-10-27
- Last modified
- 2026-08-11
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.7 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
- CVSS 3.1 ([email protected])
- 5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:P/A:N
- Weaknesses
- CWE-20, CWE-358
Description
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.
Affected configurations
• cisco adaptive security appliance (< 9.8.4.40)
• cisco secure firewall threat defense (< 6.4.0.12)
• cisco secure firewall threat defense (>= 6.5.0 < 6.6.5)
• cisco secure firewall threat defense (>= 6.7.0 < 6.7.0.2)
• cisco adaptive security appliance software (>= 9.12.0 < 9.12.4.29)
• cisco adaptive security appliance software (>= 9.13.0 < 9.14.2.15)
• cisco adaptive security appliance software (>= 9.15.0 < 9.15.1.15)
• 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