Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since April 20, 2026.
CVE-2026-20122
Cisco Catalyst SD-WAN Manager Incorrect Use of Privileged APIs Vulnerability
Cisco · Catalyst SD-WAN Manger
Added to KEV April 20, 2026
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2026-20122
- CWE
- CWE-648
- Affected products
- Catalyst SD-WAN Manger · Cisco Catalyst SD-WAN Manger · Cisco
What happened
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.
What it means for your business
Cisco Catalyst SD-WAN Manger is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2026-20122). 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. CISA remediation due date: 2026-04-23. If you need help checking exposure, call (864) 335-9223.
Required 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.
CISA due date: April 23, 2026
Sources
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