Vulnerabilities CVE-2026-20310

CVE-2026-20310

Critical

Open

TLP:CLEAR

Cisco SD-WAN Software Security Hardening Release - Improper Link Resolution Before File Access

NVD CVE.org

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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-2026-20310 are related to improper link resolution before file access issues that are grouped under the Common Weakness Enumeration (CWE) CWE-59.

Details

CVSS Score: 9.1
EPSS Score ⓘ: 0.37%

29.9th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Confidence: 90%
Published: Aug 5, 2026
Last Modified: Aug 14, 2026

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