Common Weakness Enumeration

CWE-295

Allowed

Improper Certificate Validation

Abstraction: Base · Status: Draft

API response cwe.mitre.org

The product does not validate, or incorrectly validates, a certificate.

2331 vulnerabilities reference this CWE, most recent first.

CVE-2026-78020 (GCVE-0-2026-78020)

Vulnerability from cvelistv5 – Published: 2026-10-09 08:51 – Updated: 2026-10-10 12:16
VLAI
Summary
Dell Secure Connect Gateway (SCG) Policy Manager, versions prior to 5.34.00.16, contains an Improper Certificate Validation vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Denial of service, Information disclosure, and Remote execution.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-10 03:55 UTC
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
dell CNA under the mitre root
CNA scorecard C 70/100 over 442 records in the last 180 days details
References
Impacted products
Vendor Product Version
Dell Secure Connect Gateway (SCG) Policy Manager Affected: 0 , < 5.36.00.16 or later (semver)
Create a notification for this product.
Date Public
2026-08-31 06:30
Show details on NVD website
To clipboard 

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CVE-2026-77816 (GCVE-0-2026-77816)

Vulnerability from cvelistv5 – Published: 2026-10-13 20:15 – Updated: 2026-10-14 16:54
VLAI
Title
IBM WebSphere Application Server Liberty Improper Certificate Validation
Summary
IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.9 administrative client could allow man-in-the-middle attacks. An attacker could exploit this vulnerability to obtain sensitive information.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 16:54 UTC
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
ibm CNA under the mitre root
CNA scorecard B 88/100 over 1278 records in the last 180 days details
References
URL Tags
https://www.ibm.com/support/pages/node/7291394 vendor-advisorypatch
Impacted products
Vendor Product Version
IBM WebSphere Application Server - Liberty Affected: 17.0.0.3 , ≤ 26.0.0.9 (semver)
    cpe:2.3:a:ibm:websphere_application_server_liberty:17.0.0.3:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:websphere_application_server_liberty:26.0.0.9:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-77707 (GCVE-0-2026-77707)

Vulnerability from cvelistv5 – Published: 2026-09-24 14:41 – Updated: 2026-09-24 14:58
VLAI
Title
TLS Certificate Validation Disabled for Keycloak Connections in HAVELSAN's Liman Render Engine
Summary
Improper certificate validation vulnerability in HAVELSAN Inc. Liman Render Engine allows Adversary in the Middle (AiTM). This issue affects Liman Render Engine: from 1.0 before 1.2-75.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-24 14:58 UTC
CWE
  • CWE-295 - Improper certificate validation
Assigner
TR-CERT CNA under the mitre root
CNA scorecard C 75/100 over 270 records in the last 180 days details
References
Impacted products
Vendor Product Version
HAVELSAN Inc. Liman Render Engine Affected: 1.0 , < 1.2-75 (custom)
Create a notification for this product.
Date Public
2026-09-24 14:39
Credits
Efe KIRBAŞ
Show details on NVD website
To clipboard 

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CVE-2026-76403 (GCVE-0-2026-76403)

Vulnerability from cvelistv5 – Published: 2026-08-19 21:35 – Updated: 2026-08-20 15:26
VLAI
Title
Improper Certificate Validation through HTTP Event Collector Kerberos Authentication in Splunk Connect for Kafka
Summary
In Splunk Connect for Kafka versions below 2.2.7, an unauthenticated user positioned in the network path could read or alter all relevant data sent from the connector when Kerberos authentication is used with Hypertext Transfer Protocol (HTTP) Event Collector in Splunk Enterprise. The vulnerability is possible because the Kerberos authentication path does not apply the configured certificate validation options when it builds the HTTP client. For more information see Install Splunk Connect for Kafka (https://help.splunk.com/en/data-management/integrate-data-with-add-ons/splunk-connect-for-kafka/2.2/install/install-splunk-connect-for-kafka), Security configurations for Splunk Connect for Kafka (https://help.splunk.com/en/splunk-enterprise/get-data-in/splunk-connect-for-kafka/2.2/configure/security-configurations-for-splunk-connect-for-kafka), and Set up and use HTTP Event Collector with configuration files (https://help.splunk.com/en/splunk-enterprise/get-data-in/get-started-with-getting-data-in/9.4/get-data-with-http-event-collector/set-up-and-use-http-event-collector-with-configuration-files) in the Splunk documentation.
Severity
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 15:09 UTC
CWE
  • CWE-295 - The software does not validate, or incorrectly validates, a certificate.
Assigner
cisco CNA under the mitre root
CNA scorecard C 66/100 over 377 records in the last 180 days details
References
Impacted products
Vendor Product Version
Splunk Splunk Connect for Kafka Affected: 2.2 , < 2.2.7 (custom)
Create a notification for this product.
Date Public
2026-08-19 00:00
Credits
Pavan Saxena (RootkId)
Show details on NVD website
To clipboard 

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CVE-2026-76362 (GCVE-0-2026-76362)

Vulnerability from cvelistv5 – Published: 2026-08-19 21:34 – Updated: 2026-08-21 03:56
VLAI
Title
Improper Certificate Validation through CyberArk Vault Privileged Access Manager in Splunk SOAR
Summary
In Splunk SOAR versions below 8.6.0, an unauthenticated user who can observe or alter network traffic between Splunk SOAR and a configured CyberArk Representational State Transfer (REST) server could access or modify all relevant data exchanged through that credential manager. The vulnerability is possible because the CyberArk REST client does not verify server certificates by default. The attack requires the attacker to have network-path interception capability between Splunk SOAR and the configured CyberArk REST server. For more information see Manage your organization's credentials with a password vault (https://help.splunk.com/en/splunk-soar/soar-cloud/administer-soar-cloud/configure-administration-settings-in-splunk-soar-cloud/manage-your-organizations-credentials-with-a-password-vault) in the Splunk documentation.
Severity
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 00:00 UTC
CWE
  • CWE-295 - The software does not validate, or incorrectly validates, a certificate.
Assigner
cisco CNA under the mitre root
CNA scorecard C 66/100 over 377 records in the last 180 days details
References
Impacted products
Vendor Product Version
Splunk Splunk SOAR Affected: 8.6 , < 8.6.0 (custom)
Create a notification for this product.
Date Public
2026-08-19 00:00
Show details on NVD website
To clipboard 

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CVE-2026-76242 (GCVE-0-2026-76242)

Vulnerability from cvelistv5 – Published: 2026-08-19 14:02 – Updated: 2026-08-20 15:38
VLAI
Title
stigmem Federation Peer Registration Authentication Bypass
Summary
stigmem-node 0.9.0a1 accepts federation peer key material during peer registration without a separate administrator out-of-band fingerprint approval step. On nodes that accept federation peer registration over a network where initial registration can be intercepted or misdirected, an attacker can register a malicious peer and gain access to or tamper with federation traffic. Fixed in 0.9.0a2, which introduces a pending approval flow requiring administrator fingerprint verification before peer tokens are accepted.
Severity
9.1 (Critical)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 15:37 UTC
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6527 records in the last 180 days details
References
Impacted products
Vendor Product Version
eidetic-labs stigmem Affected: 0 , < 0.9.0a2 (custom)
Unaffected: 0.9.0a2 (custom)
Create a notification for this product.
Date Public
2026-05-19 00:00
Show details on NVD website
To clipboard 

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CVE-2026-74774 (GCVE-0-2026-74774)

Vulnerability from cvelistv5 – Published: 2026-08-26 19:05 – Updated: 2026-08-27 14:42
VLAI
Summary
Dell PowerProtect One, versions 20.1.0.0 and below, contain an Improper Certificate Validation vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Protection mechanism bypass.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 14:41 UTC
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
dell CNA under the mitre root
CNA scorecard C 70/100 over 442 records in the last 180 days details
References
Impacted products
Vendor Product Version
Dell PowerProtect One Affected: 0 , < 20.3.0.0 (semver)
Create a notification for this product.
Date Public
2026-08-23 18:30
Show details on NVD website
To clipboard 

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CVE-2026-73594 (GCVE-0-2026-73594)

Vulnerability from cvelistv5 – Published: 2026-09-29 11:32 – Updated: 2026-09-30 03:56
VLAI
Summary
Dell Secure Connect Gateway (SCG) Policy Manager, versions prior to 5.34.00.16, Versions prior to 5.36, contains an Improper Certificate Validation vulnerability. An unauthenticated attacker with adjacent network access could potentially exploit this vulnerability, leading to Information disclosure, Information tampering, and Protection mechanism bypass.
Severity
6.4 (Medium)
CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 00:00 UTC
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
dell CNA under the mitre root
CNA scorecard C 70/100 over 442 records in the last 180 days details
References
Impacted products
Vendor Product Version
Dell Secure Connect Gateway (SCG) Policy Manager Affected: 0 , < 5.36.00.16 or later (semver)
Create a notification for this product.
Date Public
2026-08-31 06:30
Show details on NVD website
To clipboard 

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CVE-2026-73587 (GCVE-0-2026-73587)

Vulnerability from cvelistv5 – Published: 2026-09-23 14:21 – Updated: 2026-09-24 03:55
VLAI
Summary
Dell Secure Connect Gateway (SCG) Policy Manager, versions prior to 5.34.00.16, contains an Improper Certificate Validation vulnerability. An unauthenticated attacker with adjacent network access could potentially exploit this vulnerability, leading to Information disclosure, Information tampering, and Protection mechanism bypass.
Severity
6.8 (Medium)
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 00:00 UTC
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
dell CNA under the mitre root
CNA scorecard C 70/100 over 442 records in the last 180 days details
References
Impacted products
Vendor Product Version
Dell Secure Connect Gateway (SCG) Policy Manager Affected: 0 , < 5.36.00.16 or later (semver)
Create a notification for this product.
Date Public
2026-08-31 06:30
Show details on NVD website
To clipboard 

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CVE-2026-73253 (GCVE-0-2026-73253)

Vulnerability from cvelistv5 – Published: 2026-08-20 17:41 – Updated: 2026-08-20 18:36
VLAI
Title
Mongoose: TLS Hostname Verification Bypass via Overly Permissive Wildcard Matching
Summary
Mongoose is an embedded web server and network library. Prior to version 7.22, an on-path network attacker with a wildcard certificate for a parent domain can impersonate deeper subdomains to a client using the built-in TLS stack. The mg_tls_verify_cert_san() and mg_tls_verify_cert_cn() functions in src/tls_builtin.c call mg_match(), whose wildcard can cross DNS label boundaries, so a pattern such as *.example.com can match foo.bar.example.com. The resulting hostname verification bypass permits interception and modification of TLS traffic. This issue is fixed in version 7.22.
Severity
9.1 (Critical)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 18:33 UTC
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7660 records in the last 180 days details
References
Impacted products
Vendor Product Version
cesanta mongoose Affected: < 7.22
Create a notification for this product.
Show details on NVD website
To clipboard 

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Mitigation
Architecture and Design Implementation

Certificates should be carefully managed and checked to assure that data are encrypted with the intended owner's public key.

Mitigation
Implementation

If certificate pinning is being used, ensure that all relevant properties of the certificate are fully validated before the certificate is pinned, including the hostname.

CAPEC-459: Creating a Rogue Certification Authority Certificate

An adversary exploits a weakness resulting from using a hashing algorithm with weak collision resistance to generate certificate signing requests (CSR) that contain collision blocks in their "to be signed" parts. The adversary submits one CSR to be signed by a trusted certificate authority then uses the signed blob to make a second certificate appear signed by said certificate authority. Due to the hash collision, both certificates, though different, hash to the same value and so the signed blob works just as well in the second certificate. The net effect is that the adversary's second X.509 certificate, which the Certification Authority has never seen, is now signed and validated by that Certification Authority.

CAPEC-475: Signature Spoofing by Improper Validation

An adversary exploits a cryptographic weakness in the signature verification algorithm implementation to generate a valid signature without knowing the key.

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