April 20, 2026 · Applied Cybernetics Group
CVE-2026-20128 — Cisco Catalyst SD-WAN Manager
Cisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format Vulnerability
- Added to KEV
2026-04-20- Federal due date
2026-04-23- Vendor
- Cisco
- Product
- Catalyst SD-WAN Manager
- EPSS
- 21.3th percentile (score 0.001, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2026-20128
CISA short description
Cisco Catalyst SD-WAN Manager contains a storing passwords in a recoverable format vulnerability that allows an authenticated, local attacker to gain DCA user privileges by accessing a credential file for the DCA user on the filesystem as a low-privileged user.
Required action
Please adhere to CISA’s guidelines to assess exposure and mitigate risks associated with Cisco SD-WAN devices as outlines in CISA’s Emergency Directive 26-03 (URL listed below in Notes) and CISA’s “Hunt & Hardening Guidance for Cisco SD-WAN Devices (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.