CVE-2026-20128 - Cisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format Vulnerability

Vulnerability Name

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

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.

Known To Be Used in Ransomware Campaigns?

Unknown

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.

Additional 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

Related News Articles

CISA Adds Cisco SD-WAN CVE-2026-20182 to KEV After Admin Access ExploitsMay 15, 2026

CISA flags new SD-WAN flaw as actively exploited in attacksApril 21, 2026

CISA Adds 8 Exploited Flaws to KEV, Sets April-May 2026 Federal DeadlinesApril 21, 2026