TL;DR 📌

• As part of Cisco’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…
• Highest CVSS: 9.9 (Critical).
• Fix available — see the first fixed release below.
• CVEs: CVE-2026-20303, CVE-2026-20304, CVE-2026-20310.

What it is

As part of Cisco’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.