Cisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format Vulnerability (CVE-2026-20128)
Severity: high · Patch status: unknown · Since 2026-04-20 · CVE-2026-20128
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. CISA added CVE-2026-20128 to its Known Exploited Vulnerabilities catalog on Apr 20, 2026, which means attackers are exploiting it in the wild.
What to do
- 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.
- US federal agencies must remediate by Apr 23, 2026 (BOD 22-01); treat that as the outer limit.
Sources
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