CVE-2026-20128
Cisco Catalyst SD-WAN Manager Information Disclosure Vulnerability
In short
Cisco Catalyst SD-WAN Manager exposes a password file that an unauthenticated attacker can read remotely via a crafted HTTP request. Once obtained, this password allows the attacker to gain access to other systems with the same credentials.
Technical detail
The Data Collection Agent (DCA) credential file is accessible to unauthenticated remote attackers through a specially crafted HTTP request, enabling credential disclosure. An attacker can leverage the obtained DCA user credentials to authenticate and gain unauthorized access to other affected Catalyst SD-WAN Manager instances. Affects versions prior to 20.18; exploitation requires network access to the vulnerable system.
Summary generated and translated by AI from the official description.
A vulnerability in the Data Collection Agent (DCA) feature of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to gain DCA user privileges on an affected system.
This vulnerability is due to the presence of a credential file for the DCA user on an affected system. An attacker could exploit this vulnerability by sending a crafted HTTP request and reading the file that contains the DCA password from that affected system. A successful exploit could allow the attacker to access another affected system and gain DCA user privileges.
Note: Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected by this vulnerability.
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Affected products
Cisco · Cisco Catalyst SD-WAN ManagerWant to know if your infrastructure is exposed to this?
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