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5.3
MEDIUM CVSS 3.1
CVE-2021-1234
Cisco SD-WAN vManage Information Disclosure Vulnerabilities
Description

A vulnerability in the cluster management interface of Cisco SD-WAN vManage Software could allow an unauthenticated, remote attacker to view sensitive information on an affected system. To be affected by this vulnerability, the vManage software must be in cluster mode. This vulnerability is due to the absence of authentication for sensitive information in the cluster management interface. An attacker could exploit this vulnerability by sending a crafted request to the cluster management interface of an affected system. A successful exploit could allow the attacker to view sensitive information on the affected system.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

INFO

Published Date :

Nov. 18, 2024, 4:15 p.m.

Last Modified :

Aug. 4, 2025, 2:44 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2021-1234 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Cisco catalyst_sd-wan_manager
: Total Affected Vendor : 1 | Products : 1
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 3.1 MEDIUM [email protected]
Solution
This information is provided by the 3rd party feeds.
  • Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCvu28438, CSCvu28450
Public PoC/Exploit Available at Github

CVE-2021-1234 has a 50 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

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-2021-1234.

URL Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-vmaninfdis3-OvdR6uu8 Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-1234 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-2021-1234 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).

Profile Photo
grayf0x05/msf_exploit_finder_tool

Python tool to find CVE exploits and generate vulnerability reports.

Python

Updated: 2 days, 10 hours ago
1 stars 0 fork 0 watcher
Born at : Aug. 28, 2025, 11:17 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
DHARANRAJM/CyberSentinel

None

Python Dockerfile C JavaScript PowerShell Batchfile Roff Shell HTML CSS

Updated: 1 week, 5 days ago
0 stars 0 fork 0 watcher
Born at : Aug. 23, 2025, 2:51 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
irfan-sec/Aura-sec

A simple and extensible network port scanner written in Python. A project for learning and community.

Python

Updated: 15 hours, 27 minutes ago
10 stars 0 fork 0 watcher
Born at : July 31, 2025, 11:28 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
Billy-Esteves/AI-SSD-research-personal-repository

None

C

Updated: 20 hours, 2 minutes ago
0 stars 0 fork 0 watcher
Born at : July 29, 2025, 5:37 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
TunahanTuna/pentesting-api

None

Dockerfile Python Shell

Updated: 1 month ago
0 stars 1 fork 1 watcher
Born at : July 25, 2025, 4:52 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
a101e-lab/FirmVulLinker

None

Python Shell Dockerfile JavaScript CSS HTML

Updated: 2 weeks ago
1 stars 0 fork 0 watcher
Born at : July 15, 2025, 9:51 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
RENANth/Pentest

None

Python

Updated: 2 months ago
0 stars 0 fork 0 watcher
Born at : July 3, 2025, 4:47 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
auser112/vulnscanner

Lightweight CLI tool for scanning Java and Go project dependencies against the OSS Index. Get clear, color-coded vulnerability reports. 🛠️📊

assets-management automation domainscan nmap-scan nslookup openportsscanner owasp-top-10 penetration-testing pentesting php pythonscript scanner security sourecode vulnerability-detection vulnerability-scanner vulnerability-scanners whois-lookup

Go

Updated: 2 months ago
0 stars 0 fork 0 watcher
Born at : July 2, 2025, 8 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
rad-security/image-scan-action

A repo containing the RAD Image Scan GitHub Action

Dockerfile Makefile Shell

Updated: 2 months ago
0 stars 0 fork 0 watcher
Born at : June 30, 2025, 3:02 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
Douda/PSSESWrapper

PowerShell module for Symantec Endpoint Security (SES) API - Cross-platform wrapper with comprehensive device, policy, and threat intelligence management

PowerShell

Updated: 2 months ago
0 stars 0 fork 0 watcher
Born at : June 30, 2025, 2:32 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
Deeazer/ness-pars

None

Python

Updated: 2 months, 1 week ago
0 stars 0 fork 0 watcher
Born at : June 28, 2025, 3:17 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
cverna/coreos-cve-agent

Agent used to verify is a RHEL CVE is fixed in RHEL CoreOS

Python

Updated: 2 months, 1 week ago
0 stars 0 fork 0 watcher
Born at : June 24, 2025, 8:24 a.m. This repo has been linked 2 different CVEs too.
Profile Photo
PatrickAcheson/Learning-Plan-Cybersecurity-RAG-System

Planned material to cover for our latest InfoSec intern.

Python CSS HTML

Updated: 1 month, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : June 3, 2025, 1:52 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
RENANth/Pentest

None

Python

Updated: 3 months, 2 weeks ago
0 stars 0 fork 0 watcher
Born at : May 19, 2025, 11:39 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
udibabaskydeck/ralk

Reachability analysis tool for Linux kernel to flag CVEs that matter

Python

Updated: 2 months, 2 weeks ago
0 stars 0 fork 0 watcher
Born at : May 19, 2025, 9:50 p.m. This repo has been linked 3 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-1234 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2021-1234 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]

    Aug. 04, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.6:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.7:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.5:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.1.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.3.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.3:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.1.12:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.1.1.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.097:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.929:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.31:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.3:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.0.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.1.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.10:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.8:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.9:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.4:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.2.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.1.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.1.2:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.2:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.099:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.3:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.4:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.5:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.302:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.303:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.6:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.3.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.6:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.7:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.8:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.6.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.4:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.5:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.0.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.0.1a:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.1.2_937:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.098:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.32:*:*:*:*:*:*:* *cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.501_es:*:*:*:*:*:*:*
    Added Reference Type Cisco Systems, Inc.: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-vmaninfdis3-OvdR6uu8 Types: Vendor Advisory
  • CVE Received by [email protected]

    Nov. 18, 2024

    Action Type Old Value New Value
    Added Description A vulnerability in the cluster management interface of Cisco SD-WAN vManage Software could allow an unauthenticated, remote attacker to view sensitive information on an affected system. To be affected by this vulnerability, the vManage software must be in cluster mode. This vulnerability is due to the absence of authentication for sensitive information in the cluster management interface. An attacker could exploit this vulnerability by sending a crafted request to the cluster management interface of an affected system. A successful exploit could allow the attacker to view sensitive information on the affected system.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
    Added Reference Cisco Systems, Inc. https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-vmaninfdis3-OvdR6uu8 [No types assigned]
    Added CWE Cisco Systems, Inc. CWE-497
    Added CVSS V3.1 Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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.
Vulnerability Scoring Details
Base CVSS Score: 5.3
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact