CVE-2026-20245: Cisco Catalyst SD-WAN Manager Improper Encoding or Escaping of Output Vulnerability
CVE-2026-20245 is a Severity not scored in source feed flaw in Cisco Catalyst SD-WAN Manager. Cisco Catalyst SD-WAN Manager formerly SD-WAN vManage contains an improper encoding or escaping of output vulnerability. This vulnerability could allow an authenticated, local attacker to execute arbitrary commands as root by supplying a crafted file to the affected system. It is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-06-09), meaning it is being actively exploited. The fix: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Source: CISA Known Exploited Vulnerabilities Catalog. Data as of 2026-06-13.
Vulnerability details
| Field | Value |
|---|---|
| CVE ID | CVE-2026-20245 |
| Vulnerability | Cisco Catalyst SD-WAN Manager Improper Encoding or Escaping of Output Vulnerability |
| Vendor / product | Cisco — Catalyst SD-WAN Manager |
| CVSS base score | Not in source feed |
| Severity | — |
| Weakness (CWE) | CWE-116 |
| Added to CISA KEV | 2026-06-09 |
| CISA remediation due | 2026-06-23 |
| Known ransomware use | Unknown |
Source: CISA Known Exploited Vulnerabilities Catalog. Data as of 2026-06-13.
What is the risk?
Cisco Catalyst SD-WAN Manager formerly SD-WAN vManage contains an improper encoding or escaping of output vulnerability. This vulnerability could allow an authenticated, local attacker to execute arbitrary commands as root by supplying a crafted file to the affected system.
How to remediate CVE-2026-20245
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
U.S. federal civilian agencies were required to remediate this vulnerability by 2026-06-23 under CISA Binding Operational Directive 22-01. Private organizations should treat it with comparable urgency.
References
Frequently asked questions
What is CVE-2026-20245?
CVE-2026-20245 is a vulnerability in Cisco Catalyst SD-WAN Manager: Cisco Catalyst SD-WAN Manager formerly SD-WAN vManage contains an improper encoding or escaping of output vulnerability. This vulnerability could allow an authenticated, local attacker to execute arbitrary commands as root by supplying a crafted file to the affected system.
How severe is CVE-2026-20245?
The CISA KEV catalog does not publish a CVSS base score for this entry. Check the NVD record for the official score. Its presence in the KEV catalog means it is confirmed to be exploited in the wild.
Is CVE-2026-20245 being exploited in the wild?
Yes. It appears in the CISA Known Exploited Vulnerabilities (KEV) catalog, which only lists vulnerabilities with reliable evidence of active exploitation. It was added on 2026-06-09.
How do I fix CVE-2026-20245?
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Related vulnerabilities
- CVE-2026-20182: Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability
- CVE-2009-3459: Adobe Acrobat and Reader Heap-Based Buffer Overflow Vulnerability
- CVE-2025-48595: Android Framework Integer Overflow Vulnerability
- CVE-2026-7473: Arista Extensible Operating System Incomplete Comparison with Missing Factors Vulnerability
Last updated: 2026-06-13