Status: NEW | Advisory ID: CVE-2026-20303
| CVE | CVE-2026-20303 |
| CVSS Score / Version | 9.9 (Critical) / CVSS v3.1 |
| Updated | 2026-08-14 |
| CVSS Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| CVSS Prose | attack vector is network; attack complexity is low; privileges required is low; user interaction is none; scope is changed; confidentiality impact is high; integrity impact is high; availability impact is high. |
| Classified as | CWE-20 (Improper Input Validation) |
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. (NVD)
| Source | Reference |
|---|---|
| NVD | https://nvd.nist.gov/vuln/detail/CVE-2026-20303 |
| CVE | https://www.cve.org/CVERecord?id=CVE-2026-20303 |