{"id":9891,"date":"2026-09-17T14:11:56","date_gmt":"2026-09-17T14:11:56","guid":{"rendered":"https:\/\/news.cybertechworld.co.in\/index.php\/2026\/09\/17\/critical-unbound-dnssec-validator-flaw-could-allow-rce-via-a-malicious-dns-zone\/"},"modified":"2026-09-17T14:11:56","modified_gmt":"2026-09-17T14:11:56","slug":"critical-unbound-dnssec-validator-flaw-could-allow-rce-via-a-malicious-dns-zone","status":"publish","type":"post","link":"https:\/\/news.cybertechworld.co.in\/index.php\/2026\/09\/17\/critical-unbound-dnssec-validator-flaw-could-allow-rce-via-a-malicious-dns-zone\/","title":{"rendered":"Critical Unbound DNSSEC Validator Flaw Could Allow RCE via a Malicious DNS Zone"},"content":{"rendered":"<p>\u200bEvery release of the Unbound DNS resolver before 1.26.1 has a critical heap overflow in its DNSSEC validator, maintainer NLnet Labs said in an\u00a0advisory\u00a0on Wednesday.<\/p>\n<p>An attacker who controls a malicious zone and queries a vulnerable resolver can trigger it, enabling remote code execution.<\/p>\n<p>Unbound 1.26.1, released the same day, fixes the bug, tracked as\u00a0CVE-2026-81642, along with\u00a0Every release of the Unbound DNS resolver before 1.26.1 has a critical heap overflow in its DNSSEC validator, maintainer NLnet Labs said in an\u00a0advisory\u00a0on Wednesday.<\/p>\n<p>An attacker who controls a malicious zone and queries a vulnerable resolver can trigger it, enabling remote code execution.<\/p>\n<p>Unbound 1.26.1, released the same day, fixes the bug, tracked as\u00a0CVE-2026-81642, along with\u00a0\u00a0The Hacker News<\/p>","protected":false},"excerpt":{"rendered":"<p>\u200bEvery release of the Unbound DNS resolver before 1.26.1 has a critical heap overflow in its DNSSEC validator, maintainer NLnet Labs said in an\u00a0advisory\u00a0on Wednesday. An attacker who controls a malicious zone and queries a vulnerable resolver can trigger it, enabling remote code execution. Unbound 1.26.1, released the same day, fixes the bug, tracked as\u00a0CVE-2026-81642,&hellip;&nbsp;<a href=\"https:\/\/news.cybertechworld.co.in\/index.php\/2026\/09\/17\/critical-unbound-dnssec-validator-flaw-could-allow-rce-via-a-malicious-dns-zone\/\" class=\"\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Critical Unbound DNSSEC Validator Flaw Could Allow RCE via a Malicious DNS Zone<\/span><\/a><\/p>\n","protected":false},"author":0,"featured_media":9892,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/news.cybertechworld.co.in\/index.php\/wp-json\/wp\/v2\/posts\/9891"}],"collection":[{"href":"https:\/\/news.cybertechworld.co.in\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/news.cybertechworld.co.in\/index.php\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/news.cybertechworld.co.in\/index.php\/wp-json\/wp\/v2\/comments?post=9891"}],"version-history":[{"count":0,"href":"https:\/\/news.cybertechworld.co.in\/index.php\/wp-json\/wp\/v2\/posts\/9891\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/news.cybertechworld.co.in\/index.php\/wp-json\/wp\/v2\/media\/9892"}],"wp:attachment":[{"href":"https:\/\/news.cybertechworld.co.in\/index.php\/wp-json\/wp\/v2\/media?parent=9891"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/news.cybertechworld.co.in\/index.php\/wp-json\/wp\/v2\/categories?post=9891"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/news.cybertechworld.co.in\/index.php\/wp-json\/wp\/v2\/tags?post=9891"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}