CVE-2026-20128

Cisco Catalyst SD-WAN Manager Information Disclosure Vulnerability

State: Published
Severity: 7.5 High
Published: Feb 25, 2026
Updated: Apr 21, 2026
Reserved: Oct 8, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H	cisco

Weaknesses

CWE-257 Storing Passwords in a Recoverable Format

Affected Products

Product	Versions
Cisco Catalyst SD-WAN ManagerCisco	20.1.12Affected 19.2.1Affected 18.4.4Affected 18.4.5Affected 20.1.1.1Affected 20.1.1Affected 19.3.0Affected 19.2.2Affected 19.2.099Affected 18.3.6Affected 18.3.7Affected 19.2.0Affected 18.3.8Affected 19.0.0Affected 19.1.0Affected 18.4.302Affected 18.4.303Affected 19.2.097Affected 19.2.098Affected 17.2.10Affected 18.3.6.1Affected 19.0.1aAffected 18.2.0Affected 18.4.3Affected 18.4.1Affected and 111 more versions

Product

Versions

Cisco Catalyst SD-WAN ManagerCisco

20.1.12Affected
19.2.1Affected
18.4.4Affected
18.4.5Affected
20.1.1.1Affected
20.1.1Affected
19.3.0Affected
19.2.2Affected
19.2.099Affected
18.3.6Affected
18.3.7Affected
19.2.0Affected
18.3.8Affected
19.0.0Affected
19.1.0Affected
18.4.302Affected
18.4.303Affected
19.2.097Affected
19.2.098Affected
17.2.10Affected
18.3.6.1Affected
19.0.1aAffected
18.2.0Affected
18.4.3Affected
18.4.1Affected
and 111 more versions

References

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