{"id":71836,"date":"2025-10-16T21:45:39","date_gmt":"2025-10-16T18:15:39","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2025-62409-envoy-allows-large-requests-and-responses-to-cause-tcp-connection-pool-crash\/"},"modified":"2025-10-16T21:45:39","modified_gmt":"2025-10-16T18:15:39","slug":"cve-2025-62409-envoy-allows-large-requests-and-responses-to-cause-tcp-connection-pool-crash","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2025-62409-envoy-allows-large-requests-and-responses-to-cause-tcp-connection-pool-crash\/","title":{"rendered":"CVE-2025-62409 &#8211; Envoy allows large requests and responses to cause TCP connection pool crash"},"content":{"rendered":"<p>CVE ID : CVE-2025-62409<\/p>\n<p>Published :  Oct. 16, 2025, 6:15 p.m. | 25\u00a0minutes ago<\/p>\n<p>Description : Envoy is a cloud-native, open source edge and service proxy. Prior to 1.36.1, 1.35.5, 1.34.9, and 1.33.10, large requests and responses can potentially trigger TCP connection pool crashes due to flow control management in Envoy. It will happen when the connection is closing but upstream data is still coming, resulting in a buffer watermark callback nullptr reference. The vulnerability impacts TCP proxy and HTTP 1 &amp; 2 mixed use cases based on ALPN. This vulnerability is fixed in 1.36.1, 1.35.5, 1.34.9, and 1.33.10.<\/p>\n<p>Severity: 6.6 | MEDIUM<\/p>\n<p>Visit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID : CVE-2025-62409 Published : Oct. 16, 2025, 6:15 p.m. | 25\u00a0minutes ago Description : Envoy is a cloud-native, open source edge and service proxy. Prior to 1.36.1, 1.35.5, 1.34.9, and 1.33.10, large requests and responses can potentially trigger TCP connection pool crashes due to flow control management in Envoy. It will happen when &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-71836","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/71836","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=71836"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/71836\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=71836"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=71836"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=71836"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}