Common Weakness Enumeration
CWE-940
AllowedImproper Verification of Source of a Communication Channel
Abstraction: Base · Status: Incomplete
The product establishes a communication channel to handle an incoming request that has been initiated by an actor, but it does not properly verify that the request is coming from the expected origin.
107 vulnerabilities reference this CWE, most recent first.
CVE-2023-51440 (GCVE-0-2023-51440)
Vulnerability from cvelistv5 – Published: 2024-02-13 09:00 – Updated: 2024-08-02 22:32
VLAI
EPSS
VEX
Summary
A vulnerability has been identified in SIMATIC CP 343-1 (6GK7343-1EX30-0XE0) (All versions), SIMATIC CP 343-1 Lean (6GK7343-1CX10-0XE0) (All versions), SIPLUS NET CP 343-1 (6AG1343-1EX30-7XE0) (All versions), SIPLUS NET CP 343-1 Lean (6AG1343-1CX10-2XE0) (All versions). Affected products incorrectly validate TCP sequence numbers. This could allow an unauthenticated remote attacker to create a denial of service condition by injecting spoofed TCP RST packets.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-02-21 20:12 UTC
CWE
- CWE-940 - Improper Verification of Source of a Communication Channel
Assigner
References
1 reference
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Siemens | SIMATIC CP 343-1 |
Affected:
All versions
|
|
| Siemens | SIMATIC CP 343-1 Lean |
Affected:
All versions
|
|
| Siemens | SIPLUS NET CP 343-1 |
Affected:
All versions
|
|
| Siemens | SIPLUS NET CP 343-1 Lean |
Affected:
All versions
|
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CVE-2023-48387 (GCVE-0-2023-48387)
Vulnerability from cvelistv5 – Published: 2023-12-15 08:40 – Updated: 2024-10-14 06:07
VLAI
EPSS
VEX
Title
TAIWAN-CA(TWCA) JCICSecurityTool - Improper Input Validation
Summary
TAIWAN-CA(TWCA) JCICSecurityTool fails to check the source website and access locations when executing multiple Registry-related functions. In the scenario where a user is using the JCICSecurityTool and has completed identity verification, if the user browses a malicious webpage created by an attacker, the attacker can exploit this vulnerability to read or modify any registry file under HKEY_CURRENT_USER, thereby achieving remote code execution.
Severity
8.8 (High)
CWE
- CWE-940 - Improper Verification of Source of a Communication Channel
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| TAIWAN-CA(TWCA) | JCICSecurityTool |
Affected:
4.2.3.32
|
Date Public
2023-12-15 08:35
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CVE-2023-41355 (GCVE-0-2023-41355)
Vulnerability from cvelistv5 – Published: 2023-11-03 05:55 – Updated: 2024-10-14 04:02
VLAI
EPSS
VEX
Title
Chunghwa Telecom NOKIA G-040W-Q - Improper Input Validation
Summary
Chunghwa Telecom NOKIA G-040W-Q Firewall function has a vulnerability of input validation for ICMP redirect messages. An unauthenticated remote attacker can exploit this vulnerability by sending a crafted package to modify the network routing table, resulting in a denial of service or sensitive information leaking.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-06 19:50 UTC
CWE
- CWE-940 - Improper Verification of Source of a Communication Channel
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Chunghwa Telecom | NOKIA G-040W-Q |
Affected:
G040WQR201207
|
|
| nokia | g-040w-q_firmware |
Affected:
g040wqr201207
cpe:2.3:o:nokia:g-040w-q_firmware:g040wqr201207:*:*:*:*:*:*:* |
Date Public
2023-11-03 06:00
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CVE-2023-41094 (GCVE-0-2023-41094)
Vulnerability from cvelistv5 – Published: 2023-10-04 20:01 – Updated: 2024-09-26 21:39
VLAI
EPSS
VEX
Title
Touchlink authentication bypass due to packets processed after timeout or out of range in Ember ZNet
Summary
TouchLink packets processed after timeout or out of range due to Operation on a Resource after Expiration and Missing Release of Resource after Effective Lifetime may allow a device to be added outside of valid TouchLink range or pairing duration
This issue affects Ember ZNet 7.1.x from 7.1.3 through 7.1.5; 7.2.x from 7.2.0 through 7.2.3; Version 7.3 and later are unaffected
Severity
10 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-19 19:10 UTC
CWE
- CWE-940 - Improper Verification of Source of a Communication Channel
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Silicon Labs | Ember ZNet |
Affected:
7.1.3 , ≤ 7.1.5
(7.1.x)
Affected: 7.2.0 , ≤ 7.2.3 (7.2.x) Unaffected: 7.3.0 |
Date Public
2023-09-22 20:32
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CVE-2023-3663 (GCVE-0-2023-3663)
Vulnerability from cvelistv5 – Published: 2023-08-03 10:55 – Updated: 2025-02-27 21:11
VLAI
EPSS
VEX
Title
CODESYS: Missing integrity check in CODESYS Development System
Summary
In CODESYS Development System versions from 3.5.11.20 and before 3.5.19.20 a missing integrity check might allow an unauthenticated remote attacker to manipulate the content of notifications received via HTTP by the CODESYS notification server.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-26 21:54 UTC
CWE
- CWE-940 - Improper Verification of Source of a Communication Channel
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| CODESYS | CODESYS Development System |
Affected:
3.5.11.20 , < 3.5.19.20
(semver)
|
Date Public
2023-08-03 10:30
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CVE-2022-4848 (GCVE-0-2022-4848)
Vulnerability from cvelistv5 – Published: 2022-12-29 00:00 – Updated: 2025-04-09 15:45
VLAI
EPSS
VEX
Title
Improper Verification of Source of a Communication Channel in usememos/memos
Summary
Improper Verification of Source of a Communication Channel in GitHub repository usememos/memos prior to 0.9.1.
Severity
8.6 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-09 15:38 UTC
CWE
- CWE-940 - Improper Verification of Source of a Communication Channel
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| usememos | usememos/memos |
Affected:
unspecified , < 0.9.1
(custom)
|
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CVE-2022-4800 (GCVE-0-2022-4800)
Vulnerability from cvelistv5 – Published: 2022-12-28 00:00 – Updated: 2025-04-10 17:59
VLAI
EPSS
VEX
Title
Improper Verification of Source of a Communication Channel in usememos/memos
Summary
Improper Verification of Source of a Communication Channel in GitHub repository usememos/memos prior to 0.9.1.
Severity
8.6 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-09 15:23 UTC
CWE
- CWE-940 - Improper Verification of Source of a Communication Channel
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| usememos | usememos/memos |
Affected:
unspecified , < 0.9.1
(custom)
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CVE-2021-41038 (GCVE-0-2021-41038)
Vulnerability from cvelistv5 – Published: 2021-11-10 17:05 – Updated: 2024-08-04 02:59
VLAI
EPSS
VEX
Summary
In versions of the @theia/plugin-ext component of Eclipse Theia prior to 1.18.0, Webview contents can be hijacked via postMessage().
Severity
No CVSS data available.
CWE
- CWE-940 - Improper Verification of Source of a Communication Channel
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://bugs.eclipse.org/bugs/show_bug.cgi?id=575924 | x_refsource_CONFIRM |
| https://github.com/eclipse-theia/theia/pull/10125 | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Eclipse Foundation | @theia/plugin-ext |
Affected:
unspecified , < 1.18.0
(custom)
|
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CVE-2019-25613 (GCVE-0-2019-25613)
Vulnerability from cvelistv5 – Published: 2026-03-22 13:38 – Updated: 2026-03-23 16:15
VLAI
EPSS
VEX
Title
Easy Chat Server 3.1 Denial of Service via message Parameter
Summary
Easy Chat Server 3.1 contains a denial of service vulnerability that allows remote attackers to crash the application by sending oversized data in the message parameter. Attackers can establish a session via the chat.ghp endpoint and then send a POST request to body2.ghp with an excessively large message parameter value to cause the service to crash.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-23 16:15 UTC
CWE
- CWE-940 - Improper Verification of Source of a Communication Channel
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/46806 | exploit |
| http://www.echatserver.com | product |
| http://www.echatserver.com/ecssetup.exe | product |
| https://www.vulncheck.com/advisories/easy-chat-se… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Echatserver | Easy Chat |
Affected:
3.1
cpe:2.3:a:echatserver:easy_chat_server:3.1:*:*:*:*:*:*:* |
Date Public
2019-05-07 00:00
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GHSA-23J7-QM67-668G
Vulnerability from github – Published: 2026-02-19 18:31 – Updated: 2026-02-19 18:31
VLAI
Details
Dell PowerProtect Data Manager, version(s) prior to 19.22, contain(s) an Improper Verification of Source of a Communication Channel vulnerability in the REST API. A high privileged attacker with remote access could potentially exploit this vulnerability, leading to protection mechanism bypass.
Severity
4.7 (Medium)
{
"affected": [],
"aliases": [
"CVE-2026-22269"
],
"database_specific": {
"cwe_ids": [
"CWE-940"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-19T09:16:11Z",
"severity": "MODERATE"
},
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"id": "GHSA-23j7-qm67-668g",
"modified": "2026-02-19T18:31:51Z",
"published": "2026-02-19T18:31:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22269"
},
{
"type": "WEB",
"url": "https://www.dell.com/support/kbdoc/en-us/000429778/dsa-2026-046-security-update-for-dell-powerprotect-data-manager-multiple-vulnerabilities"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
}
]
}
Mitigation
Architecture and Design
- Use a mechanism that can validate the identity of the source, such as a certificate, and validate the integrity of data to ensure that it cannot be modified in transit using an Adversary-in-the-Middle (AITM) attack.
- When designing functionality of actions in the URL scheme, consider whether the action should be accessible to all mobile applications, or if an allowlist of applications to interface with is appropriate.
CAPEC-500: WebView Injection
An adversary, through a previously installed malicious application, injects code into the context of a web page displayed by a WebView component. Through the injected code, an adversary is able to manipulate the DOM tree and cookies of the page, expose sensitive information, and can launch attacks against the web application from within the web page.
CAPEC-594: Traffic Injection
An adversary injects traffic into the target's network connection. The adversary is therefore able to degrade or disrupt the connection, and potentially modify the content. This is not a flooding attack, as the adversary is not focusing on exhausting resources. Instead, the adversary is crafting a specific input to affect the system in a particular way.
CAPEC-595: Connection Reset
In this attack pattern, an adversary injects a connection reset packet to one or both ends of a target's connection. The attacker is therefore able to have the target and/or the destination server sever the connection without having to directly filter the traffic between them.
CAPEC-596: TCP RST Injection
An adversary injects one or more TCP RST packets to a target after the target has made a HTTP GET request. The goal of this attack is to have the target and/or destination web server terminate the TCP connection.