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CVE PROGRAM SOURCE RECORD9.9 Critical

CVE-2026-20303

Cisco Catalyst SD-WAN Security Hardening Release - Input Validation Vulnerabilities

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Status
Published
Published
Updated
Assigning organization
cisco

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-2026-20303 are related to improper input validation issues that are grouped under the Common Weakness Enumeration (CWE) CWE-20.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Cisco Cisco Catalyst SD-WAN Controller

Default version status: unknown

  • 20.6.4affected
  • 20.9.2affected
  • 20.3.6affected
  • 20.7.2affected
  • 20.7.1affected
  • 20.5.1affected
  • 20.6.2affected
  • 19.3.0affected
  • 20.6.1affected
  • 17.2.4affected
  • 18.2.0affected
  • 18.4.6affected
  • 19.1.0affected
  • 19.2.4affected
  • 19.2.929affected
  • 18.3.8affected
  • 18.4.303affected
  • 18.3.7affected
  • 18.4.1affected
  • 19.2.097affected
  • 19.2.0affected
  • 19.2.099affected
  • 18.3.6affected
  • 20.4.2affected
  • 19.0.0affected
  • 20.9.1affected
  • 20.3.5affected
  • 20.3.1affected
  • 18.3.5affected
  • 20.6.3affected
  • 18.4.3affected
  • 18.4.4affected
  • 18.3.3affected
  • 17.2.8affected
  • 20.8.1affected
  • 19.2.32affected
  • 19.2.2affected
  • 17.2.5affected
  • 18.4.0affected
  • 20.4.1.1affected
  • 20.1.3affected
  • 20.1.2affected
  • 17.2.10affected
  • 19.2.098affected
  • 20.1.1affected
  • 17.2.6affected
  • 19.2.1affected
  • 18.3.4affected
  • 20.4.1affected
  • 17.2.9affected
  • 19.2.31affected
  • 19.0.1aaffected
  • 18.3.0affected
  • 17.2.7affected
  • 18.4.5affected
  • 20.3.4affected
  • 20.3.3affected
  • 20.4.1.2affected
  • 20.3.2affected
  • 18.3.1affected
  • 20.1.12affected
  • 19.2.3affected
  • 20.10.1affected
  • 20.6.5affected
  • 20.3.7affected
  • 20.9.3affected
  • 20.11.1affected
  • 20.6.3.2affected
  • 20.4.2.3affected
  • 20.3.5.1affected
  • 20.3.4.3affected
  • 20.9.3.1affected
  • 20.6.4.1affected
  • 20.3.3.2affected
  • 20.6.5.2affected
  • 20.3.7.1affected
  • 20.11.1.1affected
  • 20.10.1.1affected
  • 20.6.1.2affected
  • 20.1.3.1affected
  • 20.9.2.2affected
  • 20.6.5.3affected
  • 20.6.3.3affected
  • 20.3.7.2affected
  • 20.6.5.4affected
  • 20.9.2.3affected
  • 20.9.4affected
  • 20.12.1affected
  • 20.3.8affected
  • 20.6.6affected
  • 20.12.2affected
  • 20.13.1affected
  • 20.9.5affected
  • 20.12.3affected
  • 20.6.7affected
  • 20.9.5.1affected
  • 20.14.1affected
  • 20.12.3.1affected
  • 20.12.4affected
  • 20.15.1affected
  • 20.9.6affected
  • 20.6.8affected
  • 20.16.1affected
  • 20.9.5.3affected
  • 20.12.4.1affected
  • 20.15.2affected
  • 20.12.5affected
  • 20.9.7affected
  • 20.15.3affected
  • 20.12.5.1affected
  • 20.12.5.2affected
  • 20.15.4affected
  • 20.9.7.1affected
  • 20.18.1affected
  • 20.12.6affected
  • 20.9.8affected
  • 20.15.4.1affected
  • 20.18.2affected
  • 26.1.1affected
  • 20.15.4.2affected
  • 20.18.2.1affected
  • 20.12.5.3affected
  • 20.12.6.1affected
  • 20.9.8.2affected
  • 20.15.5affected
  • 20.18.3affected
  • 20.12.7affected
  • 20.9.9affected
  • 20.18.2.2affected
  • 20.12.5.4affected
  • 20.12.7.1affected
  • 20.15.5.1affected
  • 20.15.4.3affected
  • 20.12.6.2affected
  • 20.15.5.2affected
  • 20.15.4.4affected
  • 26.1.1.1affected
  • 20.9.9.1affected
  • 20.18.3.1affected
  • 26.1.1.2affected
  • 20.15.4.5affected
  • 20.15.5.3affected
  • 20.12.7.2affected
  • 20.9.9.2affected
  • 20.15.6affected

Cisco Cisco Catalyst SD-WAN Manager

Default version status: unknown

  • 20.1.12affected
  • 19.2.1affected
  • 18.4.4affected
  • 18.4.5affected
  • 20.1.1.1affected
  • 20.1.1affected
  • 19.3.0affected
  • 19.2.2affected
  • 19.2.099affected
  • 18.3.6affected
  • 18.3.7affected
  • 19.2.0affected
  • 18.3.8affected
  • 19.0.0affected
  • 19.1.0affected
  • 18.4.302affected
  • 18.4.303affected
  • 19.2.097affected
  • 19.2.098affected
  • 17.2.10affected
  • 18.3.6.1affected
  • 19.0.1aaffected
  • 18.2.0affected
  • 18.4.3affected
  • 18.4.1affected
  • 17.2.8affected
  • 18.3.3.1affected
  • 18.4.0affected
  • 18.3.1affected
  • 17.2.6affected
  • 17.2.9affected
  • 18.3.4affected
  • 17.2.5affected
  • 18.3.1.1affected
  • 18.3.5affected
  • 18.4.0.1affected
  • 18.3.3affected
  • 17.2.7affected
  • 17.2.4affected
  • 18.3.0affected
  • 19.2.3affected
  • 18.4.501_ESaffected
  • 20.3.1affected
  • 20.1.2affected
  • 19.2.929affected
  • 19.2.31affected
  • 20.3.2affected
  • 19.2.32affected
  • 20.3.2_925affected
  • 20.3.2.1affected
  • 20.3.2.1_927affected
  • 18.4.6affected
  • 20.1.2_937affected
  • 20.4.1affected
  • 20.3.2_928affected
  • 20.3.2_929affected
  • 20.4.1.0.1affected
  • 20.3.2.1_930affected
  • 19.2.4affected
  • 20.5.0.1.1affected
  • 20.4.1.1affected
  • 20.3.3affected
  • 19.2.4.0.1affected
  • 20.3.2_937affected
  • 20.3.3.1affected
  • 20.5.1affected
  • 20.1.3affected
  • 20.3.3.0.4affected
  • 20.3.3.1.2affected
  • 20.3.3.1.1affected
  • 20.4.1.2affected
  • 20.3.3.0.2affected
  • 20.4.1.1.5affected
  • 20.4.1.0.01affected
  • 20.4.1.0.02affected
  • 20.3.3.1.7affected
  • 20.3.3.1.5affected
  • 20.5.1.0.1affected
  • 20.3.3.1.10affected
  • 20.3.3.0.8affected
  • 20.4.2affected
  • 20.4.2.0.1affected
  • 20.3.4affected
  • 20.3.3.0.14affected
  • 19.2.4.0.8affected
  • 19.2.4.0.9affected
  • 20.3.4.0.1affected
  • 20.3.2.0.5affected
  • 20.6.1affected
  • 20.5.1.0.2affected
  • 20.3.3.0.17affected
  • 20.6.1.1affected
  • 20.6.0.18.3affected
  • 20.3.2.0.6affected
  • 20.6.0.18.4affected
  • 20.4.2.0.2affected
  • 20.3.3.0.16affected
  • 20.3.4.0.5affected
  • 20.6.1.0.1affected
  • 20.3.4.0.6affected
  • 20.6.2affected
  • 20.7.1EFT2affected
  • 20.3.4.0.9affected
  • 20.3.4.0.11affected
  • 20.4.2.0.4affected
  • 20.3.3.0.18affected
  • 20.7.1affected
  • 20.6.2.1affected
  • 20.3.4.1affected
  • 20.5.1.1affected
  • 20.4.2.1affected
  • 20.4.2.1.1affected
  • 20.3.4.1.1affected
  • 20.3.813affected
  • 20.3.4.0.19affected
  • 20.4.2.2.1affected
  • 20.5.1.2affected
  • 20.3.4.2affected
  • 20.3.814affected
  • 20.4.2.2affected
  • 20.6.2.2affected
  • 20.3.4.2.1affected
  • 20.7.1.1affected
  • 20.3.4.1.2affected
  • 20.6.2.2.2affected
  • 20.3.4.0.20affected
  • 20.6.2.2.3affected
  • 20.4.2.2.2affected
  • 20.3.5affected
  • 20.6.2.0.4affected
  • 20.4.2.2.3affected
  • 20.3.4.0.24affected
  • 20.6.2.2.7affected
  • 20.6.3affected
  • 20.3.4.2.2affected
  • 20.4.2.2.4affected
  • 20.7.1.0.2affected
  • 20.8.1affected
  • 20.3.5.0.8affected
  • 20.3.5.0.9affected
  • 20.4.2.2.8affected
  • 20.3.5.0.7affected
  • 20.6.3.0.7affected
  • 20.6.3.0.5affected
  • 20.6.3.0.10affected
  • 20.6.3.0.2affected
  • 20.7.2affected
  • 20.9.1EFT2affected
  • 20.6.3.0.11affected
  • 20.6.3.1affected
  • 20.6.3.0.14affected
  • 20.6.4affected
  • 20.9.1affected
  • 20.6.3.0.19affected
  • 20.6.3.0.18affected
  • 20.3.6affected
  • 20.9.1.1affected
  • 20.6.3.0.23affected
  • 20.6.4.0.4affected
  • 20.6.3.0.25affected
  • 20.6.5affected
  • 20.6.3.0.27affected
  • 20.9.2affected
  • 20.9.2.1affected
  • 20.6.3.0.29affected
  • 20.6.3.0.31affected
  • 20.6.3.0.32affected
  • 20.10.1affected
  • 20.6.3.0.33affected
  • 20.9.2.0.01affected
  • 20.9.1_LI_Imagesaffected
  • 20.10.1_LI_Imagesaffected
  • 20.9.2_LI_Imagesaffected
  • 20.3.7affected
  • 20.9.3affected
  • 20.6.5.1affected
  • 20.11.1affected
  • 20.11.1_LI_Imagesaffected
  • 20.9.3_LI_ Imagesaffected
  • 20.6.3.1.1affected
  • 20.9.3.0.2affected
  • 20.6.5.1.2affected
  • 20.9.3.0.3affected
  • 20.4.2.3affected
  • 20.6.3.2affected
  • 20.6.4.1affected
  • 20.6.3.0.38affected
  • 20.6.3.0.39affected
  • 20.3.5.1affected
  • 20.3.4.3affected
  • 20.9.3.1affected
  • 20.3.3.2affected
  • 20.6.5.2affected
  • 20.3.7.1affected
  • 20.10.1.1affected
  • 20.6.5.2.1affected
  • 20.3.4.0.25affected
  • 20.6.2.2.4affected
  • 20.6.1.2affected
  • 20.11.1.1affected
  • 20.9.3.0.5affected
  • 20.3.4.0.26affected
  • 20.6.5.1.3affected
  • 20.6.3.0.40affected
  • 20.1.3.1affected
  • 20.9.2.2affected
  • 20.6.5.2.3affected
  • 20.6.5.1.4affected
  • 20.6.5.3affected
  • 20.6.3.0.41affected
  • 20.9.3.0.7affected
  • 20.6.5.1.5affected
  • 20.9.3.0.4affected
  • 20.6.4.0.19affected
  • 20.6.5.1.6affected
  • 20.9.3.0.8affected
  • 20.6.3.3affected
  • 20.3.7.2affected
  • 20.6.5.4affected
  • 20.6.5.1.7affected
  • 20.9.3.0.12affected
  • 20.6.4.2affected
  • 20.6.5.5affected
  • 20.9.3.2affected
  • 20.11.1.2affected
  • 20.6.3.4affected
  • 20.10.1.2affected
  • 20.6.5.1.9affected
  • 20.9.3.0.16affected
  • 20.6.3.0.45affected
  • 20.6.5.1.10affected
  • 20.9.3.0.17affected
  • 20.6.5.2.4affected
  • 20.6.4.0.21affected
  • 20.9.3.0.18affected
  • 20.6.3.0.46affected
  • 20.6.3.0.47affected
  • 20.9.2.3affected
  • 20.9.3.2_LI_Imagesaffected
  • 20.9.3.0.21affected
  • 20.9.3.0.20affected
  • 20.9.4_LI_Imagesaffected
  • 20.9.4affected
  • 20.6.5.1.11affected
  • 20.12.1affected
  • 20.12.1_LI_Imagesaffected
  • 20.6.5.1.13affected
  • 20.9.3.0.23affected
  • 20.6.5.2.8affected
  • 20.9.4.1affected
  • 20.9.4.1_LI_Imagesaffected
  • 20.9.3.0.25affected
  • 20.9.3.0.24affected
  • 20.6.5.1.14affected
  • 20.3.8affected
  • 20.6.6affected
  • 20.9.3.0.26affected
  • 20.6.3.0.51affected
  • 20.9.3.0.29affected
  • 20.12.2affected
  • 20.12.2_LI_Imagesaffected
  • 20.6.6.0.1affected
  • 20.13.1_LI_Imagesaffected
  • 20.9.4.0.4affected
  • 20.13.1affected
  • 20.9.4.1.1affected
  • 20.9.5affected
  • 20.9.5_LI_Imagesaffected
  • 20.12.3_LI_Imagesaffected
  • 20.12.3affected
  • 20.9.4.1.3affected
  • 20.6.7affected
  • 20.9.5.1affected
  • 20.9.5.1_LI_Imagesaffected
  • 20.9.4.1.6affected
  • 20.14.1affected
  • 20.14.1_LI_Imagesaffected
  • 20.9.5.2affected
  • 20.9.5.2.1affected
  • 20.9.5.2_LI_Imagesaffected
  • 20.12.3.1affected
  • 20.12.4affected
  • 20.15.1_LI_Imagesaffected
  • 20.15.1affected
  • 20.9.5.1.4affected
  • 20.9.5.2.7affected
  • 20.9.5.2.13affected
  • 20.9.6affected
  • 20.9.6_LI_Imagesaffected
  • 20.9.5.2.14affected
  • 20.6.8affected
  • 20.12.4.0.03affected
  • 20.16.1affected
  • 20.16.1_LI_Imagesaffected
  • 20.12.4_LI_Imagesaffected
  • 20.9.5.2.16affected
  • 20.12.4.0.4affected
  • 20.12.401affected
  • 20.9.5.3affected
  • 20.9.5.3_LI_Imagesaffected
  • 20.12.4.1_LI_Imagesaffected
  • 20.12.4.1affected
  • 20.9.5.2.21affected
  • 20.9.6.0.3affected
  • 20.12.4.0.6affected
  • 20.15.2_LI_Imagesaffected
  • 20.15.2affected
  • 20.12.4_Monthly_ES5affected
  • 20.12.5affected
  • 20.12.5_LI_Imagesaffected
  • 20.9.7_LI _Imagesaffected
  • 20.9.7affected
  • 20.15.3affected
  • 20.15.3_ LI _Imagesaffected
  • 20.12.501affected
  • 20.12.5.1_LI_Imagesaffected
  • 20.12.5.1affected
  • 20.12.5.2_LI_Imagesaffected
  • 20.12.5.2affected
  • 20.15.3.1affected
  • 20.15.4_LI_Imagesaffected
  • 20.15.4affected
  • 20.9.7.1_LI _Imagesaffected
  • 20.9.7.1affected
  • 20.18.1affected
  • 20.18.1_LI_Imagesaffected
  • 20.12.6_LI_Imagesaffected
  • 20.12.6affected
  • 20.12.5.1.01affected
  • 26.0.1affected
  • 20.9.8affected
  • 20.9.8_LI_Imagesaffected
  • 20.18.2affected
  • 20.15.4.1_LI_Imagesaffected
  • 20.15.4.1affected
  • 20.18.2_LI_Imagesaffected
  • 26.1.1affected
  • 26.1.1_LI_Imagesaffected
  • 20.18.2.1_LI_Imagesaffected
  • 20.18.2.1affected
  • 20.15.4.2_LI_Imagesaffected
  • 20.15.4.2affected
  • 20.12.6.1affected
  • 20.12.6.1_LI_Imagesaffected
  • 20.12.5.3affected
  • 20.12.5.3_LI_Imagesaffected
  • 20.9.8.2_LI_Imagesaffected
  • 20.9.8.2affected
  • 20.18.3affected
  • 20.18.3_LI_Imagesaffected
  • 20.15.5affected
  • 20.15.5_LI_Imagesaffected
  • 20.12.7affected
  • 20.12.7_LI_Imagesaffected
  • 20.9.9affected
  • 20.9.9_LI_Imagesaffected
  • 20.18.2.2affected
  • 20.18.2.2_LI_Imagesaffected
  • 20.12.5.4affected
  • 20.12.5.4_LI_ Imagesaffected
  • 20.12.7.1_LI_Imagesaffected
  • 20.12.6.2_LI_Imagesaffected
  • 20.12.7.1affected
  • 20.15.5.1affected
  • 20.15.4.3affected
  • 20.15.4.3_LI_Imagesaffected
  • 20.15.5.1_LI_Imagesaffected
  • 20.12.6.2affected
  • 20.15.5.2affected
  • 20.15.5.2_LI_Imagesaffected
  • 26.1.1.1_LI_Imagesaffected
  • 20.15.4.4affected
  • 20.15.4.4_LI_Imagesaffected
  • 26.1.1.1affected
  • 20.9.9.1_LI_Imagesaffected
  • 20.9.9.1affected
  • 20.18.3.1_LI_Imagesaffected
  • 20.18.3.1affected
  • 26.1.1.2affected
  • 26.1.1.2_LI_Imagesaffected
  • 20.15.4.5affected
  • 20.15.4.5_LI_Imagesaffected
  • 20.15.5.3affected
  • 20.15.5.3_LI_Imagesaffected
  • 20.12.7.2_LI_Imagesaffected
  • 20.12.7.2affected
  • 20.9.9.2affected
  • 20.9.9.2_LI_Imagesaffected
  • 20.15.6affected
  • 20.15.6_LI_Imagesaffected

References