cisco-sa-sdwan-arbfw-c2rZvQMediumCVSS 6.5

Cisco Catalyst SD-WAN Manager Arbitrary File Write Vulnerability

Published
June 15, 2026
Last Modified
June 15, 2026

🔗 CVE IDs covered (1)

CVE-2026-20262 →

📋 Description

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 write access.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

CVE-2026-20262 — Cisco Catalyst SD-WAN Manager Arbitrary File Write Vulnerability (CVSS 3.1 6.5, CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N)

🎯 Affected products309

  • Cisco Catalyst SD-WAN Manager
  • Cisco Catalyst SD-WAN Manager 17.2.10
  • Cisco Catalyst SD-WAN Manager 17.2.4
  • Cisco Catalyst SD-WAN Manager 17.2.5
  • Cisco Catalyst SD-WAN Manager 17.2.6
  • Cisco Catalyst SD-WAN Manager 17.2.7
  • Cisco Catalyst SD-WAN Manager 17.2.8
  • Cisco Catalyst SD-WAN Manager 17.2.9
  • Cisco Catalyst SD-WAN Manager 18.2.0
  • Cisco Catalyst SD-WAN Manager 18.3.0
  • Cisco Catalyst SD-WAN Manager 18.3.1
  • Cisco Catalyst SD-WAN Manager 18.3.1.1
  • Cisco Catalyst SD-WAN Manager 18.3.3
  • Cisco Catalyst SD-WAN Manager 18.3.3.1
  • Cisco Catalyst SD-WAN Manager 18.3.4
  • Cisco Catalyst SD-WAN Manager 18.3.5
  • Cisco Catalyst SD-WAN Manager 18.3.6
  • Cisco Catalyst SD-WAN Manager 18.3.6.1
  • Cisco Catalyst SD-WAN Manager 18.3.7
  • Cisco Catalyst SD-WAN Manager 18.3.8
  • Cisco Catalyst SD-WAN Manager 18.4.0
  • Cisco Catalyst SD-WAN Manager 18.4.0.1
  • Cisco Catalyst SD-WAN Manager 18.4.1
  • Cisco Catalyst SD-WAN Manager 18.4.3
  • Cisco Catalyst SD-WAN Manager 18.4.302
  • Cisco Catalyst SD-WAN Manager 18.4.303
  • Cisco Catalyst SD-WAN Manager 18.4.4
  • Cisco Catalyst SD-WAN Manager 18.4.5
  • Cisco Catalyst SD-WAN Manager 18.4.501_ES
  • Cisco Catalyst SD-WAN Manager 18.4.6
  • +279 more not shown

✅ Remediation

Cisco has released software updates that address this vulnerability. https://software.cisco.com Workarounds: There are no workarounds that address this vulnerability.

🔗 References (2)