Unrated severityNVD Advisory· Published Aug 5, 2026· Updated Aug 5, 2026

Cisco Catalyst SD-WAN Security Hardening Release - Memory Corruption Vulnerabilities

CVE-2026-20313

Description

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-2026-20313 are related to Improper link resolution before file access issues that are grouped under the Common Weakness Enumeration (CWE) CWE-1284.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Cisco Systems, Inc./Catalyst SD-WANllm-fuzzy

Patches

Vulnerability mechanics

References

sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-sdwan-faLcR3Kmitre

News mentions

Cisco Patched Multiple Critical Vulnerabilities in Catalyst SD-WAN – Update Now
Cyber Security News · Aug 6, 2026

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