Summary

• A vulnerability in the CLI of Cisco Catalyst SD-WAN Manager, formerly Cisco SD-WAN vManage, could allow an authenticated, local attacker to overwrite arbitrary files on the local file system of an affected device. To exploit this vulnerability, the attacker must have valid read-only credentials with CLI access on the affected system.

  This vulnerability is due to improper access controls on files that are on the local file system. An attacker could exploit this vulnerability by running a series of crafted commands on the local file system of an affected device. A successful exploit could allow the attacker to overwrite arbitrary files on the affected device and gain privileges of the root user. To exploit this vulnerability, an attacker would need to have CLI access as a low-privilege user.

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

  This advisory is available at the following link:
  https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-fileoverwrite-Uc9tXWH

Affected Products

• Vulnerable Products

  At the time of publication, this vulnerability affected Cisco Catalyst SD-WAN Manager.

  For information about which Cisco software releases were vulnerable at the time of publication, see the Fixed Software section of this advisory. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.

  Products Confirmed Not Vulnerable

  Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability.

Workarounds

• There are no workarounds that address this vulnerability.

Fixed Software

• When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page, to determine exposure and a complete upgrade solution.

  In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.

  Fixed Releases

  This advisory is part of a collection of advisories that describe vulnerabilities in Cisco Catalyst SD-WAN Manager. The collection includes the following advisories:

  • Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerability
  • Cisco Catalyst SD-WAN Manager Arbitrary File Creation Vulnerability
  • Cisco Catalyst SD-WAN Manager Certificate Validation Vulnerability
  • Cisco Catalyst SD-WAN Manager Arbitrary File Overwrite Vulnerability
  • Cisco Catalyst SD-WAN Manager Stored Cross-Site Scripting Vulnerability
  • Cisco Catalyst SD-WAN Manager Reflected HTML Injection Vulnerability

  At the time of publication, the release information in the following table was accurate. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.

  In the following table, the left column lists Cisco software releases. The center column indicates whether a release is affected by the vulnerability described in this advisory and the first release that includes the fix for this vulnerability. The right column indicates whether a release is affected by any of the vulnerabilities that are part of this collection of advisories and which release includes fixes for all vulnerabilities in this collection.

  Customers are advised to upgrade to an appropriate fixed software release.

  Cisco Catalyst SD-WAN Manager Release	First Fixed Release for This Vulnerability	First Fixed Release for All Vulnerabilities in This Collection
  20.8 and earlier1	Not vulnerable.	Migrate to a fixed release.
  20.92	Not vulnerable.	Migrate to a fixed release.
  20.101	Migrate to a fixed release.	Migrate to a fixed release.
  20.111	Migrate to a fixed release.	Migrate to a fixed release.
  20.12	20.12.5	Migrate to a fixed release.
  20.131	Migrate to a fixed release.	Migrate to a fixed release.
  20.142	Migrate to a fixed release.	Migrate to a fixed release.
  20.15	Migrate to a fixed release.	Migrate to a fixed release.
  20.16	20.16.1	20.16.1

  1. These releases have reached End of Software Maintenance. Cisco strongly encourages customers to upgrade to a supported release.

  2. These releases have entered the end-of-life process. For milestone dates for a specific release, see the End-of-Sale and End-of-Life Announcement for that release.

  When considering a software migration, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page, to determine exposure and a complete upgrade solution.

  In all cases, customers should ensure that the new software will be sufficient for their network needs and that current hardware and software configurations will continue to be supported properly by the new product. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.

  The Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.

Exploitation and Public Announcements

• The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

Source

• This vulnerability was found during internal security testing by Andrew Kim of the Cisco Advanced Security Initiatives Group (ASIG).

URL

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-fileoverwrite-Uc9tXWH

Revision History

• Version	Description	Section	Status	Date
  1.1	Updated fixed release information for releases 20.9 and earlier.	Fixed Software	Final	2025-MAY-07
  1.0	Initial public release.	-	Final	2025-MAY-07

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