CVE-2026-20133
Cisco Catalyst SD-WAN Manager Exposure of Sensitive Information to an Unauthorized Actor Vulnerability
A vulnerability in Cisco Catalyst SD-WAN Software could allow an unauthenticated, remote attacker to view sensitive information on an affected system. This vulnerability is due to insufficient file system restrictions. An authenticated attacker with netadmin privileges could exploit this vulnerability by accessing the vshell of an affected system. A successful exploit could allow the attacker to read sensitive information on the underlying operating system.
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. Deadline for federal agencies: 2026-04-23.
4 articles across 4 outlets · first covered Apr 21, 2026 · latest Apr 21, 2026
Coverage timeline
-
CISA Adds Cisco SD WAN, Zimbra XSS Flaws to KEV Catalogwww.securityweek.com · Apr 21, 2026
-
CISA adds weaponised PaperCut, TeamCity flaws to KEV catalogsecurityaffairs.com · Apr 21, 2026
-
Cisco SD-WAN flaw leaks data, CISA urges urgent patchingwww.cisa.gov · Apr 21, 2026
-
Cisco SDWAN flaw leaks data, CISA orders patch by April 2026cisa.gov · Apr 21, 2026