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CVE-2026-20224

HighPublished

Cisco Catalyst SD-WAN Manager XML External Entity Injection Vulnerability

Published: May 14, 2026
Updated: May 14, 2026
Assigning CNA: cisco
Evidence observed: Aug 8, 2026

Primary CVSS

8.6/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

EPSS probability estimate

1.0%

Low · next 30 days

Percentile: 61.9%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

CVE-2026-20224---XXE-Injection-en-Cisco-Catalyst-SD-WAN-ManagerPoC
PoC de CVE-2026-20224: inyeccion XXE para lectura de archivos en Cisco Catalyst SD-WAN Manager (no autenticado).

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