{"id":82119,"date":"2026-07-17T03:46:25","date_gmt":"2026-07-17T00:16:25","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-34150-wazuh-heap-buffer-overflow-in-wazuh-analysisd-via-rootcheck-event-parsing\/"},"modified":"2026-07-17T03:46:25","modified_gmt":"2026-07-17T00:16:25","slug":"cve-2026-34150-wazuh-heap-buffer-overflow-in-wazuh-analysisd-via-rootcheck-event-parsing","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-34150-wazuh-heap-buffer-overflow-in-wazuh-analysisd-via-rootcheck-event-parsing\/","title":{"rendered":"CVE-2026-34150 &#8211; Wazuh: Heap buffer overflow in wazuh-analysisd via rootcheck event parsing"},"content":{"rendered":"<p>CVE ID :CVE-2026-34150<\/p>\n<p>  Published : July 17, 2026, 12:16 a.m. | 1\u00a0hour, 19\u00a0minutes ago<\/p>\n<p>  Description :Wazuh is a free and open source platform used for threat prevention, detection, and response. In versions 1.0.0 and above, prior to 4.14.5, a heap buffer overflow in wazuh-analysisd allows an unauthenticated remote attacker to crash the Wazuh manager&#8217;s analysis engine, causing complete loss of SIEM alert processing. The attack exploits the default configuration shipped in the official wazuh\/wazuh-docker deployment with default configuration. An attacker can enroll with authd without a password to obtain a valid agent ID and encryption key, connect to remoted over the Wazuh agent protocol, and inject rootcheck events containing \u00a0{key: value}\u00a0 patterns longer than 30 bytes that trigger a sprintf\u00a0overflow of a 30-byte buffer in W_JSON_ParseRootcheck, corrupting the heap and crashing wazuh-analysisd so that all alert processing silently stops while the dashboard and API keep showing stale data.<\/p>\n<p>  Severity: 7.5 | HIGH<\/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-2026-34150 Published : July 17, 2026, 12:16 a.m. | 1\u00a0hour, 19\u00a0minutes ago Description :Wazuh is a free and open source platform used for threat prevention, detection, and response. In versions 1.0.0 and above, prior to 4.14.5, a heap buffer overflow in wazuh-analysisd allows an unauthenticated remote attacker to crash the Wazuh manager&#8217;s analysis &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-82119","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82119","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=82119"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82119\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=82119"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=82119"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=82119"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}