CVE-2020-3437

Name: CVE-2020-3437
Creator: NVD / NIST
Published: 2020-07-16T18:15:19.643+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 2.88%

Last modified Jun 17, 2026

CVE-2020-3437 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 2.88% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

2.88%

85.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cisco	Sd-Wan Firmware	< 19.2.3

References

http://packetstormsecurity.com/files/162958/Cisco-SD-WAN-vManage-19.2.2-Remote-Root.htmlExploit, Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vmanwebid-5QWMcCvtVendor Advisory
http://packetstormsecurity.com/files/162958/Cisco-SD-WAN-vManage-19.2.2-Remote-Root.htmlExploit, Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vmanwebid-5QWMcCvtVendor Advisory

Timeline

Published: Jul 16, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-3437?

How severe is CVE-2020-3437?

CVE-2020-3437 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 2.88% probability of exploitation in the next 30 days.

How do I fix CVE-2020-3437?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-3437?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST