CVE-2023-20034

Name: CVE-2023-20034
Creator: NVD / NIST
Published: 2023-09-27T18:15:10.793+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.59%

Last modified Jun 17, 2026

CVE-2023-20034 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Vulnerability in the Elasticsearch database used in the of Cisco SD-WAN vManage software could allow an unauthenticated, remote attacker to access the Elasticsearch configuration database of an affected device with the privileges of the elasticsearch user. These vulnerability is due to the presence of a static username and password configured on the vManage. An attacker could exploit this vulnerability by sending a crafted HTTP request to a reachable vManage on port 9200. EPSS estimates a 0.59% chance of exploitation in the next 30 days.

Description

Vulnerability in the Elasticsearch database used in the of Cisco SD-WAN vManage software could allow an unauthenticated, remote attacker to access the Elasticsearch configuration database of an affected device with the privileges of the elasticsearch user. These vulnerability is due to the presence of a static username and password configured on the vManage. An attacker could exploit this vulnerability by sending a crafted HTTP request to a reachable vManage on port 9200. A successful exploit could allow the attacker to view the Elasticsearch database content. There are workarounds that address this vulnerability.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.59%

43.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-798

Affected Software

Vendor	Product	Versions
Cisco	Sd-Wan	>= 20.3, < 20.3.4
Cisco	Sd-Wan	20.6
Cisco	Sd-Wan	20.7

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-vman-sc-LRLfu2zPatch, Vendor Advisory
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-vman-sc-LRLfu2zPatch, Vendor Advisory

Timeline

Published: Sep 27, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-20034?

How severe is CVE-2023-20034?

CVE-2023-20034 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.59% probability of exploitation in the next 30 days.

How do I fix CVE-2023-20034?

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-2023-20034?

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

Scan your code now

Source: NVD / NIST