{"vulnerability": "cve-2021-26877", "sightings": [{"uuid": "0ff6792f-3157-4875-818f-3b894ea7c2fd", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-26877", "type": "seen", "source": "https://t.me/CyberSecurityTechnologies/2894", "content": "Critical Vulnerabilities in DNS Dynamic Updates (Analysis of CVE-2021-26877, CVE-2021-26897)\nhttps://www.mcafee.com/blogs/other-blogs/mcafee-labs/seven-windows-wonders-critical-vulnerabilities-in-dns-dynamic-updates\n+ Secure DNS Deployment Guide (NIST SP 800-81-2) (.pdf)\nhttps://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-81-2.pdf", "creation_timestamp": "2024-05-07T14:25:16.000000Z"}, {"uuid": "4fe0ec9e-00d0-4891-91c4-37cd5d29676d", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-26877", "type": "seen", "source": "https://t.me/cissp/2506", "content": "Offensive security\n1. Creating a Red & Blue Team\u00a0Homelab\nhttps://hausec.com/2021/03/04/creating-a-red-blue-team-home-lab\n\n2. API Scanning with Burp Suite\nhttps://portswigger.net/blog/api-scanning-with-burp-suite\n\n3.Critical Vulnerabilities in DNS Dynamic Updates\n(Analysis of CVE-2021-26877, CVE-2021-26897)\nhttps://www.mcafee.com/blogs/other-blogs/mcafee-labs/seven-windows-wonders-critical-vulnerabilities-in-dns-dynamic-updates", "creation_timestamp": "2026-09-01T17:01:00.162370Z"}, {"uuid": "39d905c5-c952-428d-803e-02fa9e747797", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-26877", "type": "seen", "source": "https://t.me/cissp/2506", "content": "Offensive security\n1. Creating a Red & Blue Team\u00a0Homelab\nhttps://hausec.com/2021/03/04/creating-a-red-blue-team-home-lab\n\n2. API Scanning with Burp Suite\nhttps://portswigger.net/blog/api-scanning-with-burp-suite\n\n3.Critical Vulnerabilities in DNS Dynamic Updates\n(Analysis of CVE-2021-26877, CVE-2021-26897)\nhttps://www.mcafee.com/blogs/other-blogs/mcafee-labs/seven-windows-wonders-critical-vulnerabilities-in-dns-dynamic-updates", "creation_timestamp": "2026-09-02T01:04:50.976616Z"}, {"uuid": "e54ecada-9a88-4d8d-8250-5d949cf5f32f", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-26877", "type": "published-proof-of-concept", "source": "https://t.me/cissp/2506", "content": "Offensive security\n1. Creating a Red & Blue Team\u00a0Homelab\nhttps://hausec.com/2021/03/04/creating-a-red-blue-team-home-lab\n\n2. API Scanning with Burp Suite\nhttps://portswigger.net/blog/api-scanning-with-burp-suite\n\n3.Critical Vulnerabilities in DNS Dynamic Updates\n(Analysis of CVE-2021-26877, CVE-2021-26897)\nhttps://www.mcafee.com/blogs/other-blogs/mcafee-labs/seven-windows-wonders-critical-vulnerabilities-in-dns-dynamic-updates", "creation_timestamp": "2026-09-11T17:00:03.523651Z"}, {"uuid": "3254c9f1-67bb-4a27-84a1-bba440b7c17b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-26877", "type": "published-proof-of-concept", "source": "https://t.me/cissp/2506", "content": "Offensive security\n1. Creating a Red & Blue Team\u00a0Homelab\nhttps://hausec.com/2021/03/04/creating-a-red-blue-team-home-lab\n\n2. API Scanning with Burp Suite\nhttps://portswigger.net/blog/api-scanning-with-burp-suite\n\n3.Critical Vulnerabilities in DNS Dynamic Updates\n(Analysis of CVE-2021-26877, CVE-2021-26897)\nhttps://www.mcafee.com/blogs/other-blogs/mcafee-labs/seven-windows-wonders-critical-vulnerabilities-in-dns-dynamic-updates", "creation_timestamp": "2026-09-12T00:00:35.860052Z"}]}