Cisco Catalyst SD-WAN Manager Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2026-20133)
Severity: high · Patch status: unknown · Since 2026-04-20 · CVE-2026-20133
Cisco Catalyst SD-WAN Manager contains an exposure of sensitive information to an unauthorized actor vulnerability that could allow remote attackers to view sensitive information on affected systems. CISA added CVE-2026-20133 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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