CVE-2026-20128

high Cisco ⚠️ CISA KEV — Exploited in the Wild
CVSS v3 Base Score
7.5
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS Score
0.1%
Exploitation probability in 30 days
Top 81% most likely to be exploited
Attack Characteristics
Attack Vector
Local
Attack Complexity
High
Privileges Required
High
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Published: February 25, 2026 (77 days ago)
Last Modified: April 21, 2026
Vendor: Cisco
Source: NVD

⚠️ CISA Known Exploited Vulnerability

Added to KEV: 2026-04-20
Remediation Due: 2026-04-23 (⚠ 21d overdue)

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.

CWE

CWE-257

Affected Products

cisco catalyst sd-wan manager

References

🔗 sec.cloudapps.cisco.com 🔗 www.cisa.gov