Common Weakness Enumeration
CWE-295
AllowedImproper Certificate Validation
Abstraction: Base · Status: Draft
The product does not validate, or incorrectly validates, a certificate.
2156 vulnerabilities reference this CWE, most recent first.
CVE-2019-25652 (GCVE-0-2019-25652)
Vulnerability from cvelistv5 – Published: 2026-03-27 21:19 – Updated: 2026-07-15 01:24
VLAI
EPSS
VEX
Title
UniFi Network Controller Improper Certificate Validation Leading to Credential Theft via MITM
Summary
UniFi Network Controller before version 5.10.22 and 5.11.x before 5.11.18 contains an improper certificate verification vulnerability that allows adjacent network attackers to conduct man-in-the-middle attacks by presenting a false SSL certificate during SMTP connections. Attackers can intercept SMTP traffic and obtain credentials by exploiting the insecure SSL host verification mechanism in the SMTP certificate validation process.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-30 13:56 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://community.ui.com/releases/Security-Adviso… | vendor-advisory |
| https://www.vulncheck.com/advisories/unifi-networ… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ubiquiti | UniFi Network Controller |
Affected:
0 , < 5.6.42
(semver)
Affected: 5.6.43 , < 5.10.22 (semver) Affected: 5.11 , < 5.11.18 (custom) cpe:2.3:a:ui:unifi_network_controller:*:*:*:*:*:*:*:* cpe:2.3:a:ui:unifi_network_controller:*:*:*:*:*:*:*:* cpe:2.3:a:ui:unifi_network_controller:*:*:*:*:*:*:*:* |
Date Public
2019-05-15 00:00
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CVE-2019-15604 (GCVE-0-2019-15604)
Vulnerability from cvelistv5 – Published: 2020-02-07 14:57 – Updated: 2025-04-30 22:24
VLAI
EPSS
VEX
Summary
Improper Certificate Validation in Node.js 10, 12, and 13 causes the process to abort when sending a crafted X.509 certificate
Severity
No CVSS data available.
CWE
- CWE-295 - Improper Certificate Validation (CWE-295)
Assigner
References
16 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NodeJS | Node |
Affected:
4.0 , < 4.*
(semver)
Affected: 5.0 , < 5.* (semver) Affected: 6.0 , < 6.* (semver) Affected: 7.0 , < 7.* (semver) Affected: 8.0 , < 8.* (semver) Affected: 9.0 , < 9.* (semver) Affected: 10.0 , < 10.19.0 (semver) Affected: 11.0 , < 11.* (semver) Affected: 12.0 , < 12.15.0 (semver) Affected: 13.0 , < 13.8.0 (semver) |
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CVE-2019-7615 (GCVE-0-2019-7615)
Vulnerability from cvelistv5 – Published: 2019-07-30 21:15 – Updated: 2024-08-04 20:54
VLAI
EPSS
VEX
Summary
A TLS certificate validation flaw was found in Elastic APM agent for Ruby versions before 2.9.0. When specifying a trusted server CA certificate via the 'server_ca_cert' setting, the Ruby agent would not properly verify the certificate returned by the APM server. This could result in a man in the middle style attack against the Ruby agent.
Severity
No CVSS data available.
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.elastic.co/community/security/ | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elastic APM agent for Ruby |
Affected:
before 2.9.0
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CVE-2019-5102 (GCVE-0-2019-5102)
Vulnerability from cvelistv5 – Published: 2019-11-18 17:59 – Updated: 2024-08-04 19:47
VLAI
EPSS
VEX
Summary
An exploitable information leak vulnerability exists in the ustream-ssl library of OpenWrt, versions 18.06.4 and 15.05.1. When connecting to a remote server, the server's SSL certificate is checked but no action is taken when the certificate is invalid. An attacker could exploit this behavior by performing a man-in-the-middle attack, providing any certificate, leading to the theft of all the data sent by the client during the first request.An exploitable information leak vulnerability exists in the ustream-ssl library of OpenWrt, versions 18.06.4 and 15.05.1. When connecting to a remote server, the server's SSL certificate is checked but no action is taken when the certificate is invalid. An attacker could exploit this behavior by performing a man-in-the-middle attack, providing any certificate, leading to the theft of all the data sent by the client during the first request.
Severity
4 (Medium)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
Impacted products
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CVE-2019-5101 (GCVE-0-2019-5101)
Vulnerability from cvelistv5 – Published: 2019-11-18 17:59 – Updated: 2024-08-04 19:47
VLAI
EPSS
VEX
Summary
An exploitable information leak vulnerability exists in the ustream-ssl library of OpenWrt, versions 18.06.4 and 15.05.1. When connecting to a remote server, the server's SSL certificate is checked but no action is taken when the certificate is invalid. An attacker could exploit this behavior by performing a man-in-the-middle attack, providing any certificate, leading to the theft of all the data sent by the client during the first request.An exploitable information leak vulnerability exists in the ustream-ssl library of OpenWrt, versions 18.06.4 and 15.05.1. When connecting to a remote server, the server's SSL certificate is checked but no action is taken when the certificate is invalid. An attacker could exploit this behavior by performing a man-in-the-middle attack, providing any certificate, leading to the theft of all the data sent by the client during the first request. After an SSL connection is initialized via _ustream_ssl_init, and after any data (e.g. the client's HTTP request) is written to the stream using ustream_printf, the code eventually enters the function _ustream_ssl_poll, which is used to dispatch the read/write events
Severity
4 (Medium)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
Impacted products
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CVE-2019-3890 (GCVE-0-2019-3890)
Vulnerability from cvelistv5 – Published: 2019-08-01 13:22 – Updated: 2024-08-04 19:19
VLAI
EPSS
VEX
Summary
It was discovered evolution-ews before 3.31.3 does not check the validity of SSL certificates. An attacker could abuse this flaw to get confidential information by tricking the user into connecting to a fake server without the user noticing the difference.
Severity
8.1 (High)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://gitlab.gnome.org/GNOME/evolution-ews/issues/27 | x_refsource_CONFIRM |
| https://access.redhat.com/errata/RHSA-2019:3699 | vendor-advisoryx_refsource_REDHAT |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Gnome Project | evolution-ews |
Affected:
3.31.3
|
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CVE-2019-3875 (GCVE-0-2019-3875)
Vulnerability from cvelistv5 – Published: 2019-06-12 13:51 – Updated: 2024-08-04 19:19
VLAI
EPSS
VEX
Summary
A vulnerability was found in keycloak before 6.0.2. The X.509 authenticator supports the verification of client certificates through the CRL, where the CRL list can be obtained from the URL provided in the certificate itself (CDP) or through the separately configured path. The CRL are often available over the network through unsecured protocols ('http' or 'ldap') and hence the caller should verify the signature and possibly the certification path. Keycloak currently doesn't validate signatures on CRL, which can result in a possibility of various attacks like man-in-the-middle.
Severity
6.5 (Medium)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| http://www.securityfocus.com/bid/108748 | vdb-entryx_refsource_BID |
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CVE-2019-3841 (GCVE-0-2019-3841)
Vulnerability from cvelistv5 – Published: 2019-03-25 17:03 – Updated: 2024-08-04 19:19
VLAI
EPSS
VEX
Summary
Kubevirt/virt-cdi-importer, versions 1.4.0 to 1.5.3 inclusive, were reported to disable TLS certificate validation when importing data into PVCs from container registries. This could enable man-in-the-middle attacks between a container registry and the virt-cdi-component, leading to possible undetected tampering of trusted container image content.
Severity
7.4 (High)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/kubevirt/containerized-data-im… | x_refsource_MISC |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Kubevirt project | kubevirt/virt-cdi-importer |
Affected:
from 1.4.0 to 1.5.3 inclusive
|
Date Public
2019-02-26 00:00
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CVE-2019-3814 (GCVE-0-2019-3814)
Vulnerability from cvelistv5 – Published: 2019-03-27 12:20 – Updated: 2024-08-04 19:19
VLAI
EPSS
VEX
Summary
It was discovered that Dovecot before versions 2.2.36.1 and 2.3.4.1 incorrectly handled client certificates. A remote attacker in possession of a valid certificate with an empty username field could possibly use this issue to impersonate other users.
Severity
7.7 (High)
CWE
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://www.dovecot.org/list/dovecot/2019-Februar… | x_refsource_MISC |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| https://security.gentoo.org/glsa/201904-19 | vendor-advisoryx_refsource_GENTOO |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://access.redhat.com/errata/RHSA-2019:3467 | vendor-advisoryx_refsource_REDHAT |
Impacted products
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CVE-2019-3777 (GCVE-0-2019-3777)
Vulnerability from cvelistv5 – Published: 2019-03-07 19:00 – Updated: 2024-09-16 21:56
VLAI
EPSS
VEX
Title
Apps Manager unverified SSL certs in Cloud Controller proxy
Summary
Pivotal Application Service (PAS), versions 2.2.x prior to 2.2.12, 2.3.x prior to 2.3.7 and 2.4.x prior to 2.4.3, contain apps manager that uses a cloud controller proxy that fails to verify SSL certs. A remote unauthenticated attacker that could hijack the Cloud Controller's DNS record could intercept access tokens sent to the Cloud Controller, giving the attacker access to the user's resources in the Cloud Controller
Severity
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
2 references
| URL | Tags |
|---|---|
| http://www.securityfocus.com/bid/107214 | vdb-entryx_refsource_BID |
| https://pivotal.io/security/cve-2019-3777 | x_refsource_CONFIRM |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Pivotal | Apps Manager |
Affected:
666 , < 666.0.19
(custom)
Affected: 665 , < 665.0.26 (custom) Affected: 667 , < 667.0.5 (custom) |
|
| Pivotal | Pivotal Application Service |
Affected:
2.4 , < 2.4.3
(custom)
Affected: 2.3 , < 2.3.7 (custom) Affected: 2.2 , < 2.2.12 (custom) |
Date Public
2019-02-26 00:00
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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.