CVE-2020-3594

Name: CVE-2020-3594
Creator: NVD / NIST
Published: 2020-11-06T19:15:15.487+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.28%

Last modified Jun 17, 2026

CVE-2020-3594 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A vulnerability in Cisco SD-WAN Software could allow an authenticated, local attacker to elevate privileges to root on the underlying operating system. The vulnerability is due to insufficient input validation. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

Description

A vulnerability in Cisco SD-WAN Software could allow an authenticated, local attacker to elevate privileges to root on the underlying operating system. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by providing crafted options to a specific command. A successful exploit could allow the attacker to gain root privileges.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.28%

20.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cisco	Sd-Wan	< 20.1.2
Cisco	Sd-Wan	>= 20.3, < 20.3.2

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vepestd-8C3J9VcPatch, Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vepestd-8C3J9VcPatch, Vendor Advisory

Timeline

Published: Nov 6, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-3594?

How severe is CVE-2020-3594?

CVE-2020-3594 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.

How do I fix CVE-2020-3594?

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-2020-3594?

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

Scan your code now

Source: NVD / NIST