CVE-2026-20262

June 16, 2026, 12:54 p.m.

6.5
Medium

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 a lower-privileged, single-task user account.

Product(s) Impacted

Vendor Product Versions
Cisco
  • Catalyst Sd-wan Manager
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-22
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a cisco catalyst_sd-wan_manager / / / / / / / /
a cisco catalyst_sd-wan_manager / / / / / / / /
a cisco catalyst_sd-wan_manager / / / / / / / /
a cisco catalyst_sd-wan_manager / / / / / / / /
a cisco catalyst_sd-wan_manager / / / / / / / /
a cisco catalyst_sd-wan_manager / / / / / / / /

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-arbfw-c2rZvQ
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20262

Tags

CWE-22
[email protected]
2026-06-15
CVE-2026-20262

CVSS Score

6.5 / 10

CVSS Data - 3.1

  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Privileges Required: LOW
  • Scope: UNCHANGED
  • Confidentiality Impact: NONE
  • Integrity Impact: HIGH
  • Availability Impact: NONE

    • CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

    View Vector String

Timeline

Published: June 15, 2026, 6:16 p.m.
Last Modified: June 16, 2026, 12:54 p.m.

Status : Analyzed

CVE has had analysis completed and all data associations made.

More info

Source

[email protected]

Relations

Here is the list of observables linked to the vulnerability CVE-2026-20262 using threat intelligence.

  • Catalyst SD-WAN Manager
  • Catalyst SD-WAN Manager

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.