Actively exploited in the wild
Cisco Catalyst SD-WAN Manager Directory or Path Traversal Vulnerability
Cisco - Catalyst SD-WAN Manager · Listed in the CISA KEV since 2026-06-15. This indicates confirmed attacks in production environments.
Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CVE-2026-20262
MediumCVSS 6.5KEVExploitation Probability (EPSS)
Very high risk98th percentile - higher than 98% of all known CVEs
Summary
A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager allows an authenticated remote attacker to create or overwrite any file on the filesystem. This is due to improper input validation during file upload.
Risk Assessment
An attacker could overwrite critical system files, leading to privilege escalation to root and full system compromise.
Recommendation
Update Cisco Catalyst SD-WAN Manager to the latest version and restrict user account privileges to the minimum necessary.
Other vulnerabilities in Cisco Catalyst SD-WAN Manager
See all- CVE-2026-76504CriticalActively exploited
A vulnerability in the API session-based authentication management of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to access the system with admin privileges. The issue is due to improper handling of URI encoding in HTTP requests, allowing bypass of an authentication rule for a specific API endpoint. An attacker can send a crafted HTTP request to gain admin access.
- CVE-2026-20122MediumActively exploited
A vulnerability in the API of Cisco Catalyst SD-WAN Manager due to improper file handling allows an authenticated remote attacker to overwrite arbitrary files on the local file system. Valid read-only credentials with API access are required.
- CVE-2026-20294Medium
A vulnerability in the web-based management interface of Cisco Catalyst SD-WAN Manager allows an authenticated remote attacker with low privileges to view sensitive information in clear text. The issue is due to insufficient access control for certain template types, potentially exposing authentication credentials.
- CVE-2026-20224High
A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, allows an unauthenticated, remote attacker to read arbitrary files stored on the affected system. The flaw is due to improper handling of XML External Entity (XXE) entries when parsing an XML file.
- CVE-2026-20210Medium
A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager (formerly SD-WAN vManage) allows an authenticated, remote attacker with read-only permissions to modify configurations and perform unauthorized actions. The issue is due to a failure to redact sensitive information within device configurations and templates.
- CVE-2026-20209Medium
A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager (formerly SD-WAN vManage) allows an authenticated attacker with read-only permissions to elevate privileges to high. The issue is due to sensitive session information being recorded in audit logs.
- CVE-2026-20108Medium
A vulnerability in the web-based management interface of Cisco Catalyst SD-WAN Manager allows an authenticated, remote attacker to perform a cross-site scripting (XSS) attack against a user of the interface. This is due to insufficient input validation.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS