CWE-295
AllowedImproper Certificate Validation
Abstraction: Base · Status: Draft
The product does not validate, or incorrectly validates, a certificate.
1917 vulnerabilities reference this CWE, most recent first.
GHSA-GJVH-7JH8-7XHM
Vulnerability from github – Published: 2026-04-08 03:32 – Updated: 2026-04-13 21:30Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool.
{
"affected": [],
"aliases": [
"CVE-2026-32281"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-08T02:16:03Z",
"severity": "HIGH"
},
"details": "Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool.",
"id": "GHSA-gjvh-7jh8-7xhm",
"modified": "2026-04-13T21:30:33Z",
"published": "2026-04-08T03:32:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32281"
},
{
"type": "WEB",
"url": "https://go.dev/cl/758061"
},
{
"type": "WEB",
"url": "https://go.dev/issue/78281"
},
{
"type": "WEB",
"url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"
},
{
"type": "WEB",
"url": "https://pkg.go.dev/vuln/GO-2026-4946"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-GM26-9M2C-FRWP
Vulnerability from github – Published: 2026-02-10 18:30 – Updated: 2026-02-10 18:30Improper certificate validation in Azure Local allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2026-21228"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-10T18:16:23Z",
"severity": "HIGH"
},
"details": "Improper certificate validation in Azure Local allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-gm26-9m2c-frwp",
"modified": "2026-02-10T18:30:40Z",
"published": "2026-02-10T18:30:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21228"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21228"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-GM3W-M9X6-X5VQ
Vulnerability from github – Published: 2022-05-24 19:05 – Updated: 2022-05-24 19:05Improper Certificate Validation vulnerability in the Online Threat Prevention module as used in Bitdefender Total Security allows an attacker to potentially bypass HTTP Strict Transport Security (HSTS) checks. This issue affects: Bitdefender Total Security versions prior to 25.0.7.29. Bitdefender Internet Security versions prior to 25.0.7.29. Bitdefender Antivirus Plus versions prior to 25.0.7.29.
{
"affected": [],
"aliases": [
"CVE-2020-15732"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-06-22T15:15:00Z",
"severity": "HIGH"
},
"details": "Improper Certificate Validation vulnerability in the Online Threat Prevention module as used in Bitdefender Total Security allows an attacker to potentially bypass HTTP Strict Transport Security (HSTS) checks. This issue affects: Bitdefender Total Security versions prior to 25.0.7.29. Bitdefender Internet Security versions prior to 25.0.7.29. Bitdefender Antivirus Plus versions prior to 25.0.7.29.",
"id": "GHSA-gm3w-m9x6-x5vq",
"modified": "2022-05-24T19:05:52Z",
"published": "2022-05-24T19:05:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-15732"
},
{
"type": "WEB",
"url": "https://www.bitdefender.com/support/security-advisories/improper-certificate-validation-bitdefender-total-security-va-8957"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-GM4H-J7PH-PQ7G
Vulnerability from github – Published: 2022-05-17 02:39 – Updated: 2025-04-20 03:39The "Pioneer Bank & Trust Mobile Banking" by PIONEER BANK AND TRUST app 3.0.0 -- aka pioneer-bank-trust-mobile-banking/id603182861 for iOS does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.
{
"affected": [],
"aliases": [
"CVE-2017-9580"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-06-16T12:29:00Z",
"severity": "MODERATE"
},
"details": "The \"Pioneer Bank \u0026 Trust Mobile Banking\" by PIONEER BANK AND TRUST app 3.0.0 -- aka pioneer-bank-trust-mobile-banking/id603182861 for iOS does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.",
"id": "GHSA-gm4h-j7ph-pq7g",
"modified": "2025-04-20T03:39:13Z",
"published": "2022-05-17T02:39:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-9580"
},
{
"type": "WEB",
"url": "https://medium.com/%40chronic_9612/advisory-44-credit-union-apps-for-ios-may-allow-login-credential-exposure-4d2f380b85c5"
},
{
"type": "WEB",
"url": "https://medium.com/@chronic_9612/advisory-44-credit-union-apps-for-ios-may-allow-login-credential-exposure-4d2f380b85c5"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-GM5R-37PP-62P4
Vulnerability from github – Published: 2022-05-17 02:48 – Updated: 2022-05-17 02:48WebSocket.swift in Starscream before 2.0.4 allows an SSL Pinning bypass because of incorrect management of the certValidated variable (it can be set to true but cannot be set to false).
{
"affected": [],
"aliases": [
"CVE-2017-7192"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-04-06T14:59:00Z",
"severity": "HIGH"
},
"details": "WebSocket.swift in Starscream before 2.0.4 allows an SSL Pinning bypass because of incorrect management of the certValidated variable (it can be set to true but cannot be set to false).",
"id": "GHSA-gm5r-37pp-62p4",
"modified": "2022-05-17T02:48:39Z",
"published": "2022-05-17T02:48:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-7192"
},
{
"type": "WEB",
"url": "https://github.com/daltoniam/Starscream/commit/dbeb1190b8dcbff4f0b797f9e9d9b9b864d1f0d6"
},
{
"type": "WEB",
"url": "https://github.com/daltoniam/Starscream/releases/tag/2.0.4"
},
{
"type": "WEB",
"url": "http://seclists.org/bugtraq/2017/Apr/66"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-GMM6-VQJM-5P45
Vulnerability from github – Published: 2022-05-13 01:36 – Updated: 2022-05-13 01:36It was found that CloudForms does not verify that the server hostname matches the domain name in the certificate when using a custom CA and communicating with Red Hat Virtualization (RHEV) and OpenShift. This would allow an attacker to spoof RHEV or OpenShift systems and potentially harvest sensitive information from CloudForms.
{
"affected": [],
"aliases": [
"CVE-2017-2639"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-07-27T13:29:00Z",
"severity": "HIGH"
},
"details": "It was found that CloudForms does not verify that the server hostname matches the domain name in the certificate when using a custom CA and communicating with Red Hat Virtualization (RHEV) and OpenShift. This would allow an attacker to spoof RHEV or OpenShift systems and potentially harvest sensitive information from CloudForms.",
"id": "GHSA-gmm6-vqjm-5p45",
"modified": "2022-05-13T01:36:52Z",
"published": "2022-05-13T01:36:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-2639"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2017:1367"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2017-2639"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1429632"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2639"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/98769"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1038599"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-GMVH-JJ3C-4M6J
Vulnerability from github – Published: 2025-08-28 15:30 – Updated: 2025-09-23 18:30Improper Certificate Validation in Checkmk Exchange plugin Freebox v6 agent allows attackers in MitM position to intercept traffic.
{
"affected": [],
"aliases": [
"CVE-2025-58125"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-28T13:16:10Z",
"severity": "MODERATE"
},
"details": "Improper Certificate Validation in Checkmk Exchange plugin Freebox v6 agent allows attackers in MitM position to intercept traffic.",
"id": "GHSA-gmvh-jj3c-4m6j",
"modified": "2025-09-23T18:30:21Z",
"published": "2025-08-28T15:30:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-58125"
},
{
"type": "WEB",
"url": "https://exchange.checkmk.com/p/freebox-v6"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-GP77-R46P-XFVC
Vulnerability from github – Published: 2026-07-14 18:31 – Updated: 2026-07-14 18:31A improper certificate validation vulnerability in Fortinet FortiClientEMS 7.4.3 through 7.4.5, FortiClientEMS 7.4.0 through 7.4.1, FortiClientEMS 7.2 all versions may allow attacker to information disclosure via
{
"affected": [],
"aliases": [
"CVE-2026-59836"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T16:17:02Z",
"severity": "HIGH"
},
"details": "A improper certificate validation vulnerability in Fortinet FortiClientEMS 7.4.3 through 7.4.5, FortiClientEMS 7.4.0 through 7.4.1, FortiClientEMS 7.2 all versions may allow attacker to information disclosure via \u003cinsert attack vector here\u003e",
"id": "GHSA-gp77-r46p-xfvc",
"modified": "2026-07-14T18:31:56Z",
"published": "2026-07-14T18:31:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59836"
},
{
"type": "WEB",
"url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-147"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-GP9V-8HXX-PQXM
Vulnerability from github – Published: 2022-05-13 01:38 – Updated: 2022-05-13 01:38On iOS and Android devices, the ShoreTel Mobility Client app version 9.1.3.109 fails to properly validate SSL certificates provided by HTTPS connections, which means that an attacker in the position to perform MITM attacks may be able to obtain sensitive account information such as login credentials.
{
"affected": [],
"aliases": [
"CVE-2016-6562"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-07-13T20:29:00Z",
"severity": "HIGH"
},
"details": "On iOS and Android devices, the ShoreTel Mobility Client app version 9.1.3.109 fails to properly validate SSL certificates provided by HTTPS connections, which means that an attacker in the position to perform MITM attacks may be able to obtain sensitive account information such as login credentials.",
"id": "GHSA-gp9v-8hxx-pqxm",
"modified": "2022-05-13T01:38:44Z",
"published": "2022-05-13T01:38:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-6562"
},
{
"type": "WEB",
"url": "https://www.info-sec.ca/advisories/ShoreTel-Mobility.html"
},
{
"type": "WEB",
"url": "https://www.kb.cert.org/vuls/id/475907"
},
{
"type": "WEB",
"url": "https://www.securityfocus.com/bid/95224"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-GQ3H-4HC4-6J3M
Vulnerability from github – Published: 2022-05-24 16:45 – Updated: 2024-04-04 03:03The PrinterLogic Print Management software, versions up to and including 18.3.1.96, does not validate, or incorrectly validates, the PrinterLogic management portal's SSL certificate. When a certificate is invalid or malicious, it might allow an attacker to spoof a trusted entity by using a man-in-the-middle (MITM) attack. The software might connect to a malicious host while believing it is a trusted host, or the software might be deceived into accepting spoofed data that appears to originate from a trusted host.
{
"affected": [],
"aliases": [
"CVE-2018-5408"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-05-08T15:30:00Z",
"severity": "HIGH"
},
"details": "The PrinterLogic Print Management software, versions up to and including 18.3.1.96, does not validate, or incorrectly validates, the PrinterLogic management portal\u0027s SSL certificate. When a certificate is invalid or malicious, it might allow an attacker to spoof a trusted entity by using a man-in-the-middle (MITM) attack. The software might connect to a malicious host while believing it is a trusted host, or the software might be deceived into accepting spoofed data that appears to originate from a trusted host.",
"id": "GHSA-gq3h-4hc4-6j3m",
"modified": "2024-04-04T03:03:04Z",
"published": "2022-05-24T16:45:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-5408"
},
{
"type": "WEB",
"url": "https://kb.cert.org/vuls/id/169249"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/108285"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
}
]
}
Mitigation
Certificates should be carefully managed and checked to assure that data are encrypted with the intended owner's public key.
Mitigation
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.