CVE-2026-20262: Cisco Catalyst SD-WAN Manager Directory or Path Traversal Vulnerability
Summary
Cisco Catalyst SD-WAN Manager has a directory or path traversal vulnerability allowing authenticated remote attackers to create or overwrite files on the system. This vulnerability requires immediate mitigation according to vendor instructions and CISA guidance.
IFF Assessment
The vulnerability allows for arbitrary file creation or overwriting on affected systems, posing a significant risk to data integrity and system security.
Severity
The vulnerability allows for arbitrary file write, which is a critical impact. The attack vector is network and requires authentication, but the ease of exploitation for an authenticated user makes it highly dangerous.
CISA KEV: Listed as actively exploited. Federal patch due: June 29, 2026. Known ransomware use: Unknown.
Defender Context
This vulnerability in Cisco Catalyst SD-WAN Manager allows for arbitrary file manipulation, which could lead to system compromise or data destruction. Defenders should prioritize applying vendor-provided mitigations and follow CISA's guidance on risk-based patching to prevent potential exploitation.