5.4
MEDIUM
CVSS 3.1
CVE-2026-20210
Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerability
Overview
Description
A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker with read-only permissions to modify configurations and perform unauthorized actions on an affected system. This vulnerability exists because of a failure to redact sensitive information within device configurations and templates. An attacker could exploit this vulnerability by elevating their read-only permissions to those of a high-privileged user. A successful exploit could allow the attacker to access or modify configuration settings within Cisco Catalyst SD-WAN Manager as a high-privileged user.
Details
INFO
Published Date :
May 14, 2026, 5:16 p.m.
Last Modified :
June 29, 2026, 5:35 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
Update Cisco Catalyst SD-WAN Manager to resolve privilege escalation.
- Update the software to the latest version.
- Review and restrict user permissions carefully.
- Apply vendor patches when available.
- Monitor for unauthorized actions.
References
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-20210.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-20210 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-20210
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-20210 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-20210 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 29, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* versions up to (excluding) 20.9.9.1 *cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* versions from (including) 20.12.6 up to (excluding) 20.12.6.2 *cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* versions from (including) 20.13 up to (excluding) 20.15.4.4 *cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* versions from (including) 20.15.5 up to (excluding) 20.15.5.2 *cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* versions from (including) 20.16 up to (excluding) 20.18.2.2 *cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* versions from (including) 26.1 up to (excluding) 26.1.1.1 *cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.12.7:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* versions from (including) 20.10 up to (excluding) 20.12.5.4 Added Reference Type Cisco Systems, Inc.: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-mltvnps2-JxpWm7R Types: Vendor Advisory Added Reference Type Cisco Systems, Inc.: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa-EHchtZk Types: Not Applicable -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Cisco', 'product': 'Cisco Catalyst SD-WAN Manager', 'versions': [{'status': 'affected', 'version': '20.1.12'}, {'status': 'affected', 'version': '19.2.1'}, {'status': 'affected', 'version': '18.4.4'}, {'status': 'affected', 'version': '18.4.5'}, {'status': 'affected', 'version': '20.1.1.1'}, {'status': 'affected', 'version': '20.1.1'}, {'status': 'affected', 'version': '19.3.0'}, {'status': 'affected', 'version': '19.2.2'}, {'status': 'affected', 'version': '19.2.099'}, {'status': 'affected', 'version': '18.3.6'}, {'status': 'affected', 'version': '18.3.7'}, {'status': 'affected', 'version': '19.2.0'}, {'status': 'affected', 'version': '18.3.8'}, {'status': 'affected', 'version': '19.0.0'}, {'status': 'affected', 'version': '19.1.0'}, {'status': 'affected', 'version': '18.4.302'}, {'status': 'affected', 'version': '18.4.303'}, {'status': 'affected', 'version': '19.2.097'}, {'status': 'affected', 'version': '19.2.098'}, {'status': 'affected', 'version': '17.2.10'}, {'status': 'affected', 'version': '18.3.6.1'}, {'status': 'affected', 'version': '19.0.1a'}, {'status': 'affected', 'version': '18.2.0'}, {'status': 'affected', 'version': '18.4.3'}, {'status': 'affected', 'version': '18.4.1'}, {'status': 'affected', 'version': '17.2.8'}, {'status': 'affected', 'version': '18.3.3.1'}, {'status': 'affected', 'version': '18.4.0'}, {'status': 'affected', 'version': '18.3.1'}, {'status': 'affected', 'version': '17.2.6'}, {'status': 'affected', 'version': '17.2.9'}, {'status': 'affected', 'version': '18.3.4'}, {'status': 'affected', 'version': '17.2.5'}, {'status': 'affected', 'version': '18.3.1.1'}, {'status': 'affected', 'version': '18.3.5'}, {'status': 'affected', 'version': '18.4.0.1'}, {'status': 'affected', 'version': '18.3.3'}, {'status': 'affected', 'version': '17.2.7'}, {'status': 'affected', 'version': '17.2.4'}, {'status': 'affected', 'version': '18.3.0'}, {'status': 'affected', 'version': '19.2.3'}, {'status': 'affected', 'version': '18.4.501_ES'}, {'status': 'affected', 'version': '20.3.1'}, {'status': 'affected', 'version': '20.1.2'}, {'status': 'affected', 'version': '19.2.929'}, {'status': 'affected', 'version': '19.2.31'}, {'status': 'affected', 'version': '20.3.2'}, {'status': 'affected', 'version': '19.2.32'}, {'status': 'affected', 'version': '20.3.2_925'}, {'status': 'affected', 'version': '20.3.2.1'}, {'status': 'affected', 'version': '20.3.2.1_927'}, {'status': 'affected', 'version': '18.4.6'}, {'status': 'affected', 'version': '20.1.2_937'}, {'status': 'affected', 'version': '20.4.1'}, {'status': 'affected', 'version': '20.3.2_928'}, {'status': 'affected', 'version': '20.3.2_929'}, {'status': 'affected', 'version': '20.4.1.0.1'}, {'status': 'affected', 'version': '20.3.2.1_930'}, {'status': 'affected', 'version': '19.2.4'}, {'status': 'affected', 'version': '20.5.0.1.1'}, {'status': 'affected', 'version': '20.4.1.1'}, {'status': 'affected', 'version': '20.3.3'}, {'status': 'affected', 'version': '19.2.4.0.1'}, {'status': 'affected', 'version': '20.3.2_937'}, {'status': 'affected', 'version': '20.3.3.1'}, {'status': 'affected', 'version': '20.5.1'}, {'status': 'affected', 'version': '20.1.3'}, {'status': 'affected', 'version': '20.3.3.0.4'}, {'status': 'affected', 'version': '20.3.3.1.2'}, {'status': 'affected', 'version': '20.3.3.1.1'}, {'status': 'affected', 'version': '20.4.1.2'}, {'status': 'affected', 'version': '20.3.3.0.2'}, {'status': 'affected', 'version': '20.4.1.1.5'}, {'status': 'affected', 'version': '20.4.1.0.01'}, {'status': 'affected', 'version': '20.4.1.0.02'}, {'status': 'affected', 'version': '20.3.3.1.7'}, {'status': 'affected', 'version': '20.3.3.1.5'}, {'status': 'affected', 'version': '20.5.1.0.1'}, {'status': 'affected', 'version': '20.3.3.1.10'}, {'status': 'affected', 'version': '20.3.3.0.8'}, {'status': 'affected', 'version': '20.4.2'}, {'status': 'affected', 'version': '20.4.2.0.1'}, {'status': 'affected', 'version': '20.3.4'}, {'status': 'affected', 'version': '20.3.3.0.14'}, {'status': 'affected', 'version': '19.2.4.0.8'}, {'status': 'affected', 'version': '19.2.4.0.9'}, {'status': 'affected', 'version': '20.3.4.0.1'}, {'status': 'affected', 'version': '20.3.2.0.5'}, {'status': 'affected', 'version': '20.6.1'}, {'status': 'affected', 'version': '20.5.1.0.2'}, {'status': 'affected', 'version': '20.3.3.0.17'}, {'status': 'affected', 'version': '20.6.1.1'}, {'status': 'affected', 'version': '20.6.0.18.3'}, {'status': 'affected', 'version': '20.3.2.0.6'}, {'status': 'affected', 'version': '20.6.0.18.4'}, {'status': 'affected', 'version': '20.4.2.0.2'}, {'status': 'affected', 'version': '20.3.3.0.16'}, {'status': 'affected', 'version': '20.3.4.0.5'}, {'status': 'affected', 'version': '20.6.1.0.1'}, {'status': 'affected', 'version': '20.3.4.0.6'}, {'status': 'affected', 'version': '20.6.2'}, {'status': 'affected', 'version': '20.7.1EFT2'}, {'status': 'affected', 'version': '20.3.4.0.9'}, {'status': 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{'status': 'affected', 'version': '20.6.2.2.2'}, {'status': 'affected', 'version': '20.3.4.0.20'}, {'status': 'affected', 'version': '20.6.2.2.3'}, {'status': 'affected', 'version': '20.4.2.2.2'}, {'status': 'affected', 'version': '20.3.5'}, {'status': 'affected', 'version': '20.6.2.0.4'}, {'status': 'affected', 'version': '20.4.2.2.3'}, {'status': 'affected', 'version': '20.3.4.0.24'}, {'status': 'affected', 'version': '20.6.2.2.7'}, {'status': 'affected', 'version': '20.6.3'}, {'status': 'affected', 'version': '20.3.4.2.2'}, {'status': 'affected', 'version': '20.4.2.2.4'}, {'status': 'affected', 'version': '20.7.1.0.2'}, {'status': 'affected', 'version': '20.8.1'}, {'status': 'affected', 'version': '20.3.5.0.8'}, {'status': 'affected', 'version': '20.3.5.0.9'}, {'status': 'affected', 'version': '20.4.2.2.8'}, {'status': 'affected', 'version': '20.3.5.0.7'}, {'status': 'affected', 'version': '20.6.3.0.7'}, {'status': 'affected', 'version': '20.6.3.0.5'}, {'status': 'affected', 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'version': '20.9.5'}, {'status': 'affected', 'version': '20.9.5_LI_Images'}, {'status': 'affected', 'version': '20.12.3_LI_Images'}, {'status': 'affected', 'version': '20.12.3'}, {'status': 'affected', 'version': '20.9.4.1.3'}, {'status': 'affected', 'version': '20.6.7'}, {'status': 'affected', 'version': '20.9.5.1'}, {'status': 'affected', 'version': '20.9.5.1_LI_Images'}, {'status': 'affected', 'version': '20.9.4.1.6'}, {'status': 'affected', 'version': '20.14.1'}, {'status': 'affected', 'version': '20.14.1_LI_Images'}, {'status': 'affected', 'version': '20.9.5.2'}, {'status': 'affected', 'version': '20.9.5.2.1'}, {'status': 'affected', 'version': '20.9.5.2_LI_Images'}, {'status': 'affected', 'version': '20.12.3.1'}, {'status': 'affected', 'version': '20.12.4'}, {'status': 'affected', 'version': '20.15.1_LI_Images'}, {'status': 'affected', 'version': '20.15.1'}, {'status': 'affected', 'version': '20.9.5.1.4'}, {'status': 'affected', 'version': '20.9.5.2.7'}, {'status': 'affected', 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'20.9.8.2_LI_Images'}, {'status': 'affected', 'version': '20.9.8.2'}, {'status': 'affected', 'version': '20.18.3'}, {'status': 'affected', 'version': '20.18.3_LI_Images'}, {'status': 'affected', 'version': '20.15.5'}, {'status': 'affected', 'version': '20.15.5_LI_Images'}, {'status': 'affected', 'version': '20.12.7'}, {'status': 'affected', 'version': '20.12.7_LI_Images'}, {'status': 'affected', 'version': '20.9.9'}, {'status': 'affected', 'version': '20.9.9_LI_Images'}, {'status': 'affected', 'version': '20.18.2.2'}, {'status': 'affected', 'version': '20.18.2.2_LI_Images'}], 'defaultStatus': 'unknown'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-20210', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-05-14T00:00:00+00:00'} -
New CVE Received by [email protected]
May. 14, 2026
Action Type Old Value New Value Added Description A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker with read-only permissions to modify configurations and perform unauthorized actions on an affected system. This vulnerability exists because of a failure to redact sensitive information within device configurations and templates. An attacker could exploit this vulnerability by elevating their read-only permissions to those of a high-privileged user. A successful exploit could allow the attacker to access or modify configuration settings within Cisco Catalyst SD-WAN Manager as a high-privileged user. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Added CWE CWE-779 Added Reference https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-mltvnps2-JxpWm7R Added Reference https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa-EHchtZk
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.