CVE-2026-20128 — Cisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format Vulnerability
2026-04-20 • CISA Known Exploited Vulnerability
[event] 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.
> AFFECTED SOFTWARE
| Field | Value |
|---|---|
| Vendor | Cisco |
| Product | Catalyst SD-WAN Manager |
| CWE | CWE-257 |
| CVE ID | CVE-2026-20128 |
| Date Added | 2026-04-20 |
| Due Date | 2026-04-23 |
| Ransomware Campaign | Unknown |
> MITIGATION
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.
Due Date: 2026-04-23
> REFERENCES
- [1] https://www.cisa.gov/news-events/directives/ed-26-03-mitigate-vulnerabilities-ci...
- [2] https://www.cisa.gov/news-events/directives/supplemental-direction-ed-26-03-hunt...
- [3] https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/ci...
- [4] https://nvd.nist.gov/vuln/detail/CVE-2026-20128