https://www.phllaps.net/products/cisco-catalyst-sd-wan-controller/ Recent content in Cisco Catalyst SD-WAN Controller on PhllapsNET Hugo en-gb Wed, 05 Aug 2026 16:00:00 +0000 https://www.phllaps.net/posts/cisco-catalyst-sd-wan-software-security-hardening-release-august-2026/ Wed, 05 Aug 2026 16:00:00 +0000 https://www.phllaps.net/posts/cisco-catalyst-sd-wan-software-security-hardening-release-august-2026/ <div style="background:#b91c1c;color:white;padding:16px 18px;border-radius:14px;font-weight:800;font-size:18px;display:flex;align-items:center;gap:12px;box-shadow:0 10px 24px rgba(0,0,0,0.18);"><span style="font-size:24px;">🚨</span><span>SEVERITY: CRITICAL — CVSS 9.9</span><span style="opacity:0.95;font-weight:700;margin-left:auto;">Security Advisory</span></div> <h2 id="tldr-">TL;DR 📌</h2> <ul> <li>As part of Cisco&rsquo;s ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. These vulnerabilities were found during internal testing and are not known to be actively exploited. To…</li> <li>Highest CVSS: <strong>9.9 (Critical)</strong>.</li> <li><strong>Fix available</strong> — see the first fixed release below.</li> <li>CVEs: CVE-2026-20303, CVE-2026-20304, CVE-2026-20310.</li> </ul> <h2 id="what-it-is">What it is</h2> <p>As part of Cisco&rsquo;s ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.</p>