9 Realms Cybersecurity
AdvisoriesCVE-2026-20128

Cisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format Vulnerability

CiscoCatalyst SD-WAN ManagerAdded April 20, 2026

CISA Known Exploited Vulnerabilities Data

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.

CISA Due Date

April 23, 2026 (federal agency requirement)

Known Ransomware Campaign Use

Unknown

Notes

CISA Mitigation Instructions: https://www.cisa.gov/news-events/directives/ed-26-03-mitigate-vulnerabilities-cisco-sd-wan-systems ; https://www.cisa.gov/news-events/directives/supplemental-direction-ed-26-03-hunt-and-hardening-guidance-cisco-sd-wan-systems ; https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v ; https://nvd.nist.gov/vuln/detail/CVE-2026-20128

External References

Concerned about this vulnerability in your environment?

Our team can assess your exposure and help you remediate.

Talk to Our Team

Data sourced from the CISA Known Exploited Vulnerabilities catalog. CISA does not endorse any commercial product or service.