CVE-2026-20313: Cisco Catalyst SD-WAN Security Hardening Release - Memory Corruption Vulnerabilities

Published Aug 5, 2026

Updated

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.

Affected Software

1 affected component

Cisco Cisco Catalyst SD-WAN

Event History

Aug 5, 2026

CVE Published

via MITRE·04:33 PM

Data Sourced

via MITRE·04:33 PM

DescriptionSeverityWeakness

Data Sourced

via NVD·05:16 PM

DescriptionSeverityWeakness

Frequently Asked Questions

What is the severity of CVE-2026-20313?

The severity of CVE-2026-20313 is high, rated at 7.7.

What type of vulnerability is CVE-2026-20313?

CVE-2026-20313 is a memory corruption vulnerability found in Cisco Catalyst SD-WAN.

How do I fix CVE-2026-20313?

To fix CVE-2026-20313, apply the recommended software hardening releases provided by Cisco.

What impact does CVE-2026-20313 have on my system?

CVE-2026-20313 can potentially lead to a denial of service due to memory corruption.

When was CVE-2026-20313 published?

CVE-2026-20313 was published on August 5, 2026.