{"id":13067,"date":"2025-08-14T22:36:24","date_gmt":"2025-08-14T22:36:24","guid":{"rendered":"http:\/\/localhost\/?p=13067"},"modified":"2025-08-14T22:36:24","modified_gmt":"2025-08-14T22:36:24","slug":"cisco-adaptive-security-appliance-and-firepower-threat-defense-software-network-address-translation","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=13067","title":{"rendered":"Cisco Adaptive Security Appliance and Firepower Threat Defense Software Network Address Translation DNS Inspection Denial of Service Vulnerability_CVE-2025-20136"},"content":{"rendered":"

{“lastseen”:””,”description”:”A vulnerability in the function that performs IPv4 and IPv6 Network Address Translation (NAT) DNS inspection for Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition.\\u0026nbsp;\\r\\n\\r\\nThis vulnerability is due to an infinite loop condition that occurs when a Cisco Secure ASA or Cisco Secure FTD device processes DNS packets with DNS inspection enabled and the device is configured for NAT44, NAT64, or NAT46. An attacker could exploit this vulnerability by sending crafted DNS packets that match a static NAT rule with DNS inspection enabled through an affected device. A successful exploit could allow the attacker to create an infinite loop and cause the device to reload, resulting in a DoS condition.”,”published”:”2025-08-14T16:28:17.964Z”,”modified”:”2025-08-14T19:21:21.353Z”,”type”:”cve”,”title”:”Cisco Adaptive Security Appliance and Firepower Threat Defense Software Network Address Translation DNS Inspection Denial of Service Vulnerability”,”source”:”cisco”,”references”:”https:\/\/sec.cloudapps.cisco.com\/security\/center\/content\/CiscoSecurityAdvisory\/cisco-sa-asaftd-nat-dns-dos-bqhynHTM”,”id”:”CVE-2025-20136″,”bulletinFamily”:””,”cwe”:null,”cvelist”:null,”sourceData”:”Cisco Cisco Adaptive Security Appliance (ASA) Software 9.12.3\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.3\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.1\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.1\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.2\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.2.45\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.2\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.4\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.14.1\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.4\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.2.26\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.2.24\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.2.15\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.2.14\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.2.35\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.2.20\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.2.8\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.2.17\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.2.28\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.2.33\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.2.38\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.4.25\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.3.2\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.3.7\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.3.18\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.3.14\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.4.15\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.4.8\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.1.7\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.3.29\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.14.1.10\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.2.5\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.4.22\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.3.12\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.4.7\\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.8.4.17\\nCisco Cisco 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Software 6.4.0.18\\nCisco Cisco Firepower Threat Defense Software 7.2.7\\nCisco Cisco Firepower Threat Defense Software 7.2.5.2\\nCisco Cisco Firepower Threat Defense Software 7.3.1.2\\nCisco Cisco Firepower Threat Defense Software 7.2.8\\nCisco Cisco Firepower Threat Defense Software 7.6.0\\nCisco Cisco Firepower Threat Defense Software 7.4.2\\nCisco Cisco Firepower Threat Defense Software 7.2.8.1\\nCisco Cisco Firepower Threat Defense Software 7.0.6.3\\nCisco Cisco Firepower Threat Defense Software 7.4.2.1\\nCisco Cisco Firepower Threat Defense Software 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{“lastseen”:””,”description”:”A vulnerability in the function that performs IPv4 and IPv6 Network Address Translation (NAT) DNS inspection for Cisco Secure Firewall Adaptive Security Appliance (ASA) Software…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[6,8,81,12,15,13,7,11,5],"class_list":["post-13067","post","type-post","status-publish","format-standard","hentry","category-category_cve","tag-cve","tag-cvss","tag-cvss-86","tag-exploit","tag-high","tag-news","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"\nCisco Adaptive Security Appliance and Firepower Threat Defense Software Network Address Translation DNS Inspection Denial of Service Vulnerability_CVE-2025-20136 - zero redgem<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zero.redgem.net\/?p=13067\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cisco Adaptive Security Appliance and Firepower Threat Defense Software Network Address Translation DNS Inspection Denial of Service Vulnerability_CVE-2025-20136 - 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