CVE ID
CVE-2026-20122
Vulnerability Name
Cisco Catalyst SD-WAN Manager Incorrect Use of Privileged APIs Vulnerability
- Project: Cisco
- Product: Catalyst SD-WAN Manger
Date
- Date Added: 2026-04-20
- Due Date: 2026-04-23
Description
Cisco Catalyst SD-WAN Manager contains an incorrect use of privileged APIs vulnerability due to improper file handling on the API interface of an affected system. An attacker could exploit this vulnerability by uploading a malicious file on the local file system. A successful exploit could allow the attacker to overwrite arbitrary files on the affected system and gain vmanage user privileges.
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-2026-20122
Related Security News
- CISA flags new SD-WAN flaw as actively exploited in attacks
- CISA Adds 8 Exploited Flaws to KEV, Sets April-May 2026 Federal Deadlines
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