CVE-2021-1512

Name: CVE-2021-1512
Creator: NVD / NIST
Published: 2021-05-06T13:15:10.817+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6/10EPSS 0.23%

Last modified Jun 17, 2026

CVE-2021-1512 is a medium-severity vulnerability rated 6/10 on the CVSS scale. A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to overwrite arbitrary files in the underlying file system of an affected system. This vulnerability is due to insufficient validation of the user-supplied input parameters of a specific CLI command. EPSS estimates a 0.23% chance of exploitation in the next 30 days.

Description

A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to overwrite arbitrary files in the underlying file system of an affected system. This vulnerability is due to insufficient validation of the user-supplied input parameters of a specific CLI command. An attacker could exploit this vulnerability by issuing that command with specific parameters. A successful exploit could allow the attacker to overwrite the content in any arbitrary files that reside on the underlying host file system.

Metrics

CVSS 3.1

6/10

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

EPSS Probability

0.23%

13.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-552

Affected Software

Vendor	Product	Versions
Cisco	Catalyst Sd-Wan Manager	>= 19.2, < 19.2.3
Cisco	Catalyst Sd-Wan Manager	>= 20.3, < 20.3.1
Cisco	Catalyst Sd-Wan Manager	>= 20.4, < 20.4.1
Cisco	Catalyst Sd-Wan Manager	>= 20.5, < 20.5.1
Cisco	Sd-Wan Vbond Orchestrator	All versions
Cisco	Sd-Wan Vmanage	< 18.4.6
Cisco	Sd-Wan Vmanage	>= 20.1, < 20.1.2
Cisco	Vsmart Controller Firmware	All versions
Cisco	Vedge 100 Firmware	All versions
Cisco	Vedge 1000 Firmware	All versions
Cisco	Vedge 100b Firmware	All versions
Cisco	Vedge 100m Firmware	All versions
Cisco	Vedge 100wm Firmware	All versions
Cisco	Vedge 2000 Firmware	All versions
Cisco	Vedge 5000 Firmware	All versions
Cisco	Vedge-100b Firmware	All versions
Cisco	Vedge Cloud Firmware	All versions

References

Timeline

Published: May 6, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-1512?

How severe is CVE-2021-1512?

CVE-2021-1512 has a CVSS score of 6/10 (MEDIUM severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.

How do I fix CVE-2021-1512?

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-2021-1512?

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

Scan your code now

Source: NVD / NIST