CVE-2026-20313

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.

CVSS v3 7.7 HIGH

7.7^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.1 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-sdwan-faLcR3K
https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-05 17:16

Updated : 2026-08-14 21:17

NVD link : CVE-2026-20313

Mitre link : CVE-2026-20313

CVE.ORG link : CVE-2026-20313

JSON object : View

Products Affected

No product.

CWE

CWE-1284

Improper Validation of Specified Quantity in Input

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"20.15.5_LI_Images"}, {"status": "affected", "version": "20.12.7"}, {"status": "affected", "version": "20.12.7_LI_Images"}, {"status": "affected", "version": "20.9.9"}, {"status": "affected", "version": "20.9.9_LI_Images"}, {"status": "affected", "version": "20.18.2.2"}, {"status": "affected", "version": "20.18.2.2_LI_Images"}, {"status": "affected", "version": "20.12.5.4"}, {"status": "affected", "version": "20.12.5.4_LI_ Images"}, {"status": "affected", "version": "20.12.7.1_LI_Images"}, {"status": "affected", "version": "20.12.6.2_LI_Images"}, {"status": "affected", "version": "20.12.7.1"}, {"status": "affected", "version": "20.15.5.1"}, {"status": "affected", "version": "20.15.4.3"}, {"status": "affected", "version": "20.15.4.3_LI_Images"}, {"status": "affected", "version": "20.15.5.1_LI_Images"}, {"status": "affected", "version": "20.12.6.2"}, {"status": "affected", "version": "20.15.5.2"}, {"status": "affected", "version": "20.15.5.2_LI_Images"}, {"status": "affected", "version": "26.1.1.1_LI_Images"}, {"status": "affected", "version": "20.15.4.4"}, {"status": "affected", "version": "20.15.4.4_LI_Images"}, {"status": "affected", "version": "26.1.1.1"}, {"status": "affected", "version": "20.9.9.1_LI_Images"}, {"status": "affected", "version": "20.9.9.1"}, {"status": "affected", "version": "20.18.3.1_LI_Images"}, {"status": "affected", "version": "20.18.3.1"}, {"status": "affected", "version": "26.1.1.2"}, {"status": "affected", "version": "26.1.1.2_LI_Images"}, {"status": "affected", "version": "20.15.4.5"}, {"status": "affected", "version": "20.15.4.5_LI_Images"}, {"status": "affected", "version": "20.15.5.3"}, {"status": "affected", "version": "20.15.5.3_LI_Images"}, {"status": "affected", "version": "20.12.7.2_LI_Images"}, {"status": "affected", "version": "20.12.7.2"}, {"status": "affected", "version": "20.9.9.2"}, {"status": "affected", "version": "20.9.9.2_LI_Images"}], "defaultStatus": "unknown"}]}], "published": "2026-08-05T17:16:52.437", "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-sdwan-faLcR3K", "source": "psirt@cisco.com"}, {"url": "https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "psirt@cisco.com", "description": [{"lang": "en", "value": "CWE-1284"}]}], "descriptions": [{"lang": "en", "value": "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.\r\n\r\nThe 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."}], "lastModified": "2026-08-14T21:17:17.417", "sourceIdentifier": "psirt@cisco.com"}