CVE-2026-20313: Improper Validation of Specified Quantity in Input in Cisco Cisco Catalyst SD-WAN Controller
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 Analysis
Technical Summary
CVE-2026-20313 concerns an improper validation issue related to link resolution before file access in Cisco Catalyst SD-WAN Controller software. This vulnerability, identified as CWE-1284, was found during Cisco's internal security review and affects numerous specific versions of the product. The CVSS v3.1 base score is 7.7, indicating high severity, with an attack vector of network, low attack complexity, requiring low privileges, no user interaction, and scope changed. The impact is limited to availability (denial of service), with no confidentiality or integrity impact reported. Cisco has not yet provided official remediation or patch information.
Potential Impact
The vulnerability can cause denial of service (availability impact) on affected Cisco Catalyst SD-WAN Controller versions. There is no reported impact on confidentiality or integrity. No known exploits are currently active in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Cisco has not released an official fix or temporary workaround as of the published date. Users should monitor Cisco advisories for updates and apply patches once available.
CVE-2026-20313: Improper Validation of Specified Quantity in Input in Cisco Cisco Catalyst SD-WAN Controller
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.
CVSS v3.1
Score 7.7high
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-20313 concerns an improper validation issue related to link resolution before file access in Cisco Catalyst SD-WAN Controller software. This vulnerability, identified as CWE-1284, was found during Cisco's internal security review and affects numerous specific versions of the product. The CVSS v3.1 base score is 7.7, indicating high severity, with an attack vector of network, low attack complexity, requiring low privileges, no user interaction, and scope changed. The impact is limited to availability (denial of service), with no confidentiality or integrity impact reported. Cisco has not yet provided official remediation or patch information.
Potential Impact
The vulnerability can cause denial of service (availability impact) on affected Cisco Catalyst SD-WAN Controller versions. There is no reported impact on confidentiality or integrity. No known exploits are currently active in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Cisco has not released an official fix or temporary workaround as of the published date. Users should monitor Cisco advisories for updates and apply patches once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- cisco
- Date Reserved
- 2025-10-08T11:59:15.410Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a736b62bf8831d5392da524
Added to database: 08/05/2026, 16:57:06 UTC
Last enriched: 08/05/2026, 17:12:19 UTC
Last updated: 08/05/2026, 19:59:40 UTC
Views: 5
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