CVE-2026-20262
Cisco Catalyst SD-WAN Manager Arbitrary File Write Vulnerability
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker to create a file or overwrite any file on the filesystem of an affected system. This vulnerability exists because the affected software does not properly validate user-supplied input during a file upload process. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected API endpoint of the affected system. A successful exploit could allow the attacker to create or overwrite any file on the underlying operating system. This file could later be used to elevate to root. To exploit this vulnerability, the attacker must have valid credentials with at least a lower-privileged, single-task user account.
| CWE | CWE-22 |
| Vendor | cisco |
| Product | cisco catalyst sd-wan manager |
| Ecosystems | |
| Industries | NetworkingTelecommunications |
| Published | Jun 15, 2026 |
| Last Updated | Jun 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Affected Versions
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