Cisco Catalyst SDWAN CWE312 Cleartext Data Leak
CVE-2026-20312 Published on August 5, 2026

Cisco Catalyst SD-WAN Security Hardening Release - Information Disclosure Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20312 are related to Cleartext storage of sensitive information issues that are grouped under the Common Weakness Enumeration (CWE) CWE-312.

NVD

Vulnerability Analysis

CVE-2026-20312 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

Cleartext Storage of Sensitive Information

The application stores sensitive information in cleartext within a resource that might be accessible to another control sphere. Because the information is stored in cleartext, attackers could potentially read it. Even if the information is encoded in a way that is not human-readable, certain techniques could determine which encoding is being used, then decode the information.


Products Associated with CVE-2026-20312

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Cisco Sd Wan
 
Cisco Catalyst Sd Wan Manager
 

Affected Versions

Cisco Catalyst SD-WAN Controller: Cisco Catalyst SD-WAN Manager: