CVE-2026-20224 Cisco Catalyst SD-WAN Manager XML External Entity Injection Vulnerability

High 8.6 Published 14 May 2026 Updated 14 May 2026

Unauthenticated remote attackers can read arbitrary files on Cisco Catalyst SD-WAN Manager via crafted XML requests.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-20224?

CVE-2026-20224 is a high-severity vulnerability in Cisco Catalyst Sd-Wan Manager, published on 14 May 2026. An attacker can exploit it over the internet without logging in, 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 unauthenticated, remote attacker to read arbitrary files that are stored in an affected system. The attacker does not need to have valid user credentials. This vulnerability is due to improper handling of XML External Entity (XXE) entries when parsing an XML file. An attacker could exploit this vulnerability by sending a crafted request to an affected system. A successful exploit could allow the attacker to read arbitrary files that are stored in the affected system.

Weakness: CWE-20

Which versions are affected by CVE-2026-20224?

It affects 1 product.

Products include Cisco Catalyst Sd-Wan Manager.

How do I fix CVE-2026-20224?

No fix has been published for CVE-2026-20224 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-20224 being exploited?

There is no known exploitation of CVE-2026-20224 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

All Cisco Catalyst Sd-Wan Manager vulnerabilities

Sources

Also known as GHSA-558q-cqp2-mrc3.