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CVE-2020-3437: Cisco SD-WAN vManage Software Information Disclosure Vulnerability

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-07-16 · updated 2026-06-17
• Weakness: CWE-59

Description

A vulnerability in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to read arbitrary files on the underlying filesystem of the device. The vulnerability is due to insufficient file scope limiting. An attacker could exploit this vulnerability by creating a specific file reference on the filesystem and then accessing it through the web-based management interface. A successful exploit could allow the attacker to read arbitrary files from the filesystem of the underlying operating system.

Affected products

• Cisco SD-WAN vManage: before 19.2.3 — fixed in 19.2.3

How to fix

Upgrade to a fixed version: Cisco SD-WAN vManage 19.2.3. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/162958/Cisco-SD-WAN-vManage-19.2.2-Remote-Root.html
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vmanwebid-5QWMcCvt
• http://packetstormsecurity.com/files/162958/Cisco-SD-WAN-vManage-19.2.2-Remote-Root.html
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vmanwebid-5QWMcCvt

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