CVE-2026-20128
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.
- Published Feb 25, 2026
- CVSS 7.5 high
- 7.1% chance of exploitation in the next 30 days (EPSS)
- In CISA's Known Exploited Vulnerabilities catalog
Affected software
In the news
- Quantifying 2026 Routinely Targeted Vulnerabilities (So Far) VulnCheck Blog ·
- Herding Cats: Recent Cisco SD-WAN Manager Vulnerabilities VulnCheck Blog ·