CVE-2026-20262 Cisco Catalyst SD-WAN Manager Directory or Path Traversal
Authenticated attackers can overwrite arbitrary files via the web UI, potentially leading to root privilege escalation on Cisco Catalyst SD-WAN Manager.
- Exploited in the wild
- Since 15 Jun 2026
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-20262?
CVE-2026-20262 is a medium-severity path traversal vulnerability in Cisco Catalyst Sd-Wan Manager, published on 15 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-22
Which versions are affected by CVE-2026-20262?
It affects 1 product.
Products include Cisco Catalyst Sd-Wan Manager.
How do I fix CVE-2026-20262?
No fix has been published for CVE-2026-20262 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 29 Jun 2026.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-20262 being exploited?
Yes. Attackers have exploited CVE-2026-20262 in the wild since at least 15 Jun 2026.
Public exploit code: 2 proofs of concept on GitHub.
Other vulnerabilities in Cisco Catalyst Sd-Wan Manager
- CVE-2026-20182 Cisco Catalyst SD-WAN Controller Authentication Bypass
- CVE-2026-20127 Cisco Catalyst SD-WAN Controller and Manager Authentication Bypass
- CVE-2026-76504 Cisco Catalyst SD-WAN Manager Hex Encoding
- CVE-2026-20245 Cisco Catalyst SD-WAN Manager Improper Encoding or Escaping of Output
- CVE-2022-20775 Cisco SD-WAN Path Traversal
Sources
Also known as GHSA-p45r-gcc9-fr7f.