Vulnerability intelligence

CVE-2026-20303

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20303 are related to improper input validation issues that are grouped under the Common Weakness Enumeration (CWE) CWE-20.

CVSS Score

9.9

Critical

EPSS — Exploit Probability

0.0%

Riskier than 0% of all CVEs

Exploitation

Not in CISA KEV

No federal exploitation record

Remediation

unknown

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