CVE-2026-20313
Cisco Catalyst SD-WAN Security Hardening Release - Memory Corruption Vulnerabilities
CVSS Score
7.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-1284 |
| Vendor | cisco |
| Product | cisco catalyst sd-wan controller |
| Ecosystems | |
| Industries | NetworkingTelecommunications |
| Published | Aug 5, 2026 |
| Last Updated | Aug 5, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Cisco / Cisco Catalyst SD-WAN Controller
20.6.4 20.9.2 20.3.6 20.7.2 20.7.1 20.5.1 20.6.2 19.3.0 20.6.1 17.2.4 18.2.0 18.4.6 19.1.0 19.2.4 19.2.929 18.3.8 18.4.303 18.3.7 18.4.1 19.2.097 19.2.0 19.2.099 18.3.6 20.4.2 19.0.0 20.9.1 20.3.5 20.3.1 18.3.5 20.6.3 18.4.3 18.4.4 18.3.3 17.2.8 20.8.1 19.2.32 19.2.2 17.2.5 18.4.0 20.4.1.1 20.1.3 20.1.2 17.2.10 19.2.098 20.1.1 17.2.6 19.2.1 18.3.4 20.4.1 17.2.9 19.2.31 19.0.1a 18.3.0 17.2.7 18.4.5 20.3.4 20.3.3 20.4.1.2 20.3.2 18.3.1 20.1.12 19.2.3 20.10.1 20.6.5 20.3.7 20.9.3 20.11.1 20.6.3.2 20.4.2.3 20.3.5.1 20.3.4.3 20.9.3.1 20.6.4.1 20.3.3.2 20.6.5.2 20.3.7.1 20.11.1.1 20.10.1.1 20.6.1.2 20.1.3.1 20.9.2.2 20.6.5.3 20.6.3.3 20.3.7.2 20.6.5.4 20.9.2.3 20.9.4 20.12.1 20.3.8 20.6.6 20.12.2 20.13.1 20.9.5 20.12.3 20.6.7 20.9.5.1 20.14.1 20.12.3.1 20.12.4 20.15.1 20.9.6 20.6.8 20.16.1 20.9.5.3 20.12.4.1 20.15.2 20.12.5 20.9.7 20.15.3 20.12.5.1 20.12.5.2 20.15.4 20.9.7.1 20.18.1 20.12.6 20.9.8 20.15.4.1 20.18.2 26.1.1 20.15.4.2 20.18.2.1 20.12.5.3 20.12.6.1 20.9.8.2 20.15.5 20.18.3 20.12.7 20.9.9 20.18.2.2 20.12.5.4 20.12.7.1 20.15.5.1 20.15.4.3 20.12.6.2 20.15.5.2 20.15.4.4 26.1.1.1 20.9.9.1 20.18.3.1 26.1.1.2 20.15.4.5 20.15.5.3 20.12.7.2 20.9.9.2
Cisco / Cisco Catalyst SD-WAN Manager
20.1.12 19.2.1 18.4.4 18.4.5 20.1.1.1 20.1.1 19.3.0 19.2.2 19.2.099 18.3.6 18.3.7 19.2.0 18.3.8 19.0.0 19.1.0 18.4.302 18.4.303 19.2.097 19.2.098 17.2.10 18.3.6.1 19.0.1a 18.2.0 18.4.3 18.4.1 17.2.8 18.3.3.1 18.4.0 18.3.1 17.2.6 17.2.9 18.3.4 17.2.5 18.3.1.1 18.3.5 18.4.0.1 18.3.3 17.2.7 17.2.4 18.3.0 19.2.3 18.4.501_ES 20.3.1 20.1.2 19.2.929 19.2.31 20.3.2 19.2.32 20.3.2_925 20.3.2.1 20.3.2.1_927 18.4.6 20.1.2_937 20.4.1 20.3.2_928 20.3.2_929 20.4.1.0.1 20.3.2.1_930 19.2.4 20.5.0.1.1 20.4.1.1 20.3.3 19.2.4.0.1 20.3.2_937 20.3.3.1 20.5.1 20.1.3 20.3.3.0.4 20.3.3.1.2 20.3.3.1.1 20.4.1.2 20.3.3.0.2 20.4.1.1.5 20.4.1.0.01 20.4.1.0.02 20.3.3.1.7 20.3.3.1.5 20.5.1.0.1 20.3.3.1.10 20.3.3.0.8 20.4.2 20.4.2.0.1 20.3.4 20.3.3.0.14 19.2.4.0.8 19.2.4.0.9 20.3.4.0.1 20.3.2.0.5 20.6.1 20.5.1.0.2 20.3.3.0.17 20.6.1.1 20.6.0.18.3 20.3.2.0.6 20.6.0.18.4 20.4.2.0.2 20.3.3.0.16 20.3.4.0.5 20.6.1.0.1 20.3.4.0.6 20.6.2 20.7.1EFT2 20.3.4.0.9 20.3.4.0.11 20.4.2.0.4 20.3.3.0.18 20.7.1 20.6.2.1 20.3.4.1 20.5.1.1 20.4.2.1 20.4.2.1.1 20.3.4.1.1 20.3.813 20.3.4.0.19 20.4.2.2.1 20.5.1.2 20.3.4.2 20.3.814 20.4.2.2 20.6.2.2 20.3.4.2.1 20.7.1.1 20.3.4.1.2 20.6.2.2.2 20.3.4.0.20 20.6.2.2.3 20.4.2.2.2 20.3.5 20.6.2.0.4 20.4.2.2.3 20.3.4.0.24 20.6.2.2.7 20.6.3 20.3.4.2.2 20.4.2.2.4 20.7.1.0.2 20.8.1 20.3.5.0.8 20.3.5.0.9 20.4.2.2.8 20.3.5.0.7 20.6.3.0.7 20.6.3.0.5 20.6.3.0.10 20.6.3.0.2 20.7.2 20.9.1EFT2 20.6.3.0.11 20.6.3.1 20.6.3.0.14 20.6.4 20.9.1 20.6.3.0.19 20.6.3.0.18 20.3.6 20.9.1.1 20.6.3.0.23 20.6.4.0.4 20.6.3.0.25 20.6.5 20.6.3.0.27 20.9.2 20.9.2.1 20.6.3.0.29 20.6.3.0.31 20.6.3.0.32 20.10.1 20.6.3.0.33 20.9.2.0.01 20.9.1_LI_Images 20.10.1_LI_Images 20.9.2_LI_Images 20.3.7 20.9.3 20.6.5.1 20.11.1 20.11.1_LI_Images 20.9.3_LI_ Images 20.6.3.1.1 20.9.3.0.2 20.6.5.1.2 20.9.3.0.3 20.4.2.3 20.6.3.2 20.6.4.1 20.6.3.0.38 20.6.3.0.39 20.3.5.1 20.3.4.3 20.9.3.1 20.3.3.2 20.6.5.2 20.3.7.1 20.10.1.1 20.6.5.2.1 20.3.4.0.25 20.6.2.2.4 20.6.1.2 20.11.1.1 20.9.3.0.5 20.3.4.0.26 20.6.5.1.3 20.6.3.0.40 20.1.3.1 20.9.2.2 20.6.5.2.3 20.6.5.1.4 20.6.5.3 20.6.3.0.41 20.9.3.0.7 20.6.5.1.5 20.9.3.0.4 20.6.4.0.19 20.6.5.1.6 20.9.3.0.8 20.6.3.3 20.3.7.2 20.6.5.4 20.6.5.1.7 20.9.3.0.12 20.6.4.2 20.6.5.5 20.9.3.2 20.11.1.2 20.6.3.4 20.10.1.2 20.6.5.1.9 20.9.3.0.16 20.6.3.0.45 20.6.5.1.10 20.9.3.0.17 20.6.5.2.4 20.6.4.0.21 20.9.3.0.18 20.6.3.0.46 20.6.3.0.47 20.9.2.3 20.9.3.2_LI_Images 20.9.3.0.21 20.9.3.0.20 20.9.4_LI_Images 20.9.4 20.6.5.1.11 20.12.1 20.12.1_LI_Images 20.6.5.1.13 20.9.3.0.23 20.6.5.2.8 20.9.4.1 20.9.4.1_LI_Images 20.9.3.0.25 20.9.3.0.24 20.6.5.1.14 20.3.8 20.6.6 20.9.3.0.26 20.6.3.0.51 20.9.3.0.29 20.12.2 20.12.2_LI_Images 20.6.6.0.1 20.13.1_LI_Images 20.9.4.0.4 20.13.1 20.9.4.1.1 20.9.5 20.9.5_LI_Images 20.12.3_LI_Images 20.12.3 20.9.4.1.3 20.6.7 20.9.5.1 20.9.5.1_LI_Images 20.9.4.1.6 20.14.1 20.14.1_LI_Images 20.9.5.2 20.9.5.2.1 20.9.5.2_LI_Images 20.12.3.1 20.12.4 20.15.1_LI_Images 20.15.1 20.9.5.1.4 20.9.5.2.7 20.9.5.2.13 20.9.6 20.9.6_LI_Images 20.9.5.2.14 20.6.8 20.12.4.0.03 20.16.1 20.16.1_LI_Images 20.12.4_LI_Images 20.9.5.2.16 20.12.4.0.4 20.12.401 20.9.5.3 20.9.5.3_LI_Images 20.12.4.1_LI_Images 20.12.4.1 20.9.5.2.21 20.9.6.0.3 20.12.4.0.6 20.15.2_LI_Images 20.15.2 20.12.4_Monthly_ES5 20.12.5 20.12.5_LI_Images 20.9.7_LI _Images 20.9.7 20.15.3 20.15.3_ LI _Images 20.12.501 20.12.5.1_LI_Images 20.12.5.1 20.12.5.2_LI_Images 20.12.5.2 20.15.3.1 20.15.4_LI_Images 20.15.4 20.9.7.1_LI _Images 20.9.7.1 20.18.1 20.18.1_LI_Images 20.12.6_LI_Images 20.12.6 20.12.5.1.01 26.0.1 20.9.8 20.9.8_LI_Images 20.18.2 20.15.4.1_LI_Images 20.15.4.1 20.18.2_LI_Images 26.1.1 26.1.1_LI_Images 20.18.2.1_LI_Images 20.18.2.1 20.15.4.2_LI_Images 20.15.4.2 20.12.6.1 20.12.6.1_LI_Images 20.12.5.3 20.12.5.3_LI_Images 20.9.8.2_LI_Images 20.9.8.2 20.18.3 20.18.3_LI_Images 20.15.5 20.15.5_LI_Images 20.12.7 20.12.7_LI_Images 20.9.9 20.9.9_LI_Images 20.18.2.2 20.18.2.2_LI_Images 20.12.5.4 20.12.5.4_LI_ Images 20.12.7.1_LI_Images 20.12.6.2_LI_Images 20.12.7.1 20.15.5.1 20.15.4.3 20.15.4.3_LI_Images 20.15.5.1_LI_Images 20.12.6.2 20.15.5.2 20.15.5.2_LI_Images 26.1.1.1_LI_Images 20.15.4.4 20.15.4.4_LI_Images 26.1.1.1 20.9.9.1_LI_Images 20.9.9.1 20.18.3.1_LI_Images 20.18.3.1 26.1.1.2 26.1.1.2_LI_Images 20.15.4.5 20.15.4.5_LI_Images 20.15.5.3 20.15.5.3_LI_Images 20.12.7.2_LI_Images 20.12.7.2 20.9.9.2 20.9.9.2_LI_Images