Common Weakness Enumeration
CWE-295
AllowedImproper Certificate Validation
Abstraction: Base · Status: Draft
The product does not validate, or incorrectly validates, a certificate.
2327 vulnerabilities reference this CWE, most recent first.
CVE-2026-81518 (GCVE-0-2026-81518)
Vulnerability from cvelistv5 – Published: 2026-08-28 20:18 – Updated: 2026-08-31 18:38
VLAI
EPSS
VEX
Title
BI Connector Optional Client Certificate Verification Allows Unauthenticated Connections
Summary
When mongosqld is configured with a client certificate authority file, the listener requests a client certificate during the TLS handshake but does not require one, so a client that presents no certificate is still accepted. In deployments that rely on client certificates as the sole means of identifying users, a remote party with network access to the listener can therefore establish a session and read the MongoDB data exposed through the connector.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 18:37 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB | BI Connector |
Affected:
0 , < 2.14.31
(semver)
|
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CVE-2026-81447 (GCVE-0-2026-81447)
Vulnerability from cvelistv5 – Published: 2026-09-17 14:47 – Updated: 2026-09-18 03:56
VLAI
EPSS
VEX
Summary
Dell OpenManage Server Administrator, versions prior to 11.1.0.3, contains an Improper Certificate Validation vulnerability. An unauthenticated attacker with adjacent network access could potentially exploit this vulnerability, leading to Information disclosure and Information tampering.
Severity
6.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 00:00 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/kbdoc/en-us/00050658… | vendor-advisory |
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| Dell | OpenManage Server Administrator Managed Node (Patch) for Windows |
Affected:
0 , < 11.1.0.3
(semver)
|
|
| Dell | OpenManage Server Administrator Managed Node for RHEL 8.10 |
Affected:
0 , < 11.1.0.3
(semver)
|
|
| Dell | OpenManage Server Administrator Managed Node for RHEL 9.4 |
Affected:
0 , < 11.1.0.3
(semver)
|
|
| Dell | OpenManage Server Administrator Managed Node for SLES 15 |
Affected:
0 , < 11.1.0.3
(semver)
|
|
| Dell | OpenManage Server Administrator Managed Node for Ubuntu 22.04 |
Affected:
0 , < 11.1.0.3
(semver)
|
Date Public
2026-09-08 06:30
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CVE-2026-81034 (GCVE-0-2026-81034)
Vulnerability from cvelistv5 – Published: 2026-08-26 15:45 – Updated: 2026-08-26 18:31
VLAI
EPSS
VEX
Title
Netmaker through 1.6.0 Improper Certificate Validation in SMTP Client
Summary
Netmaker disables certificate verification on the connection to the configured mail server. The sender in pro/email/smtp.go assigns a TLS configuration whose skip-verify field is set to true unconditionally, directly beneath a comment stating that the setting should be false in production. No configuration value governs it and no code path restores verification, so the client accepts any certificate the mail server presents, including one an interposing party supplies. Mail that Netmaker sends over that connection includes password-reset messages carrying single-use tokens and user invitations carrying enrolment links, so a party positioned on the path between the server and its mail relay can read those messages in transit and use a captured reset token before the intended recipient does. The setting is absent from the development branch but present in the latest release.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 18:30 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/gravitl/netmaker | product |
| https://github.com/gravitl/netmaker/issues/4062 | issue-tracking |
| https://github.com/gravitl/netmaker/blob/v1.6.0/p… | technical-description |
| https://www.vulncheck.com/advisories/netmaker-thr… | third-party-advisory |
Impacted products
Date Public
2026-08-26 00:00
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CVE-2026-80443 (GCVE-0-2026-80443)
Vulnerability from cvelistv5 – Published: 2026-10-02 09:04 – Updated: 2026-10-02 14:36 Unsupported When Assigned
VLAI
EPSS
VEX
Title
Insecure TLS Certificate Validation in API Tool Runner in HAVELSAN's Sef - AI Chatbot Platform
Summary
Improper certificate validation vulnerability in HAVELSAN Inc. Sef - AI Chatbot Platform allows Adversary in the Middle (AiTM).
This issue affects Sef - AI Chatbot Platform: before 2.1. NOTE: The vendor was contacted and it was learned that the product is not supported.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 13:32 UTC
CWE
- CWE-295 - Improper certificate validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://siberguvenlik.gov.tr/guvenlik-bildirimler… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| HAVELSAN Inc. | Sef - AI Chatbot Platform |
Affected:
0 , < 2.1
(custom)
|
Date Public
2026-10-02 09:02
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"tags": [
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"title": "Insecure TLS Certificate Validation in API Tool Runner in HAVELSAN\u0027s Sef - AI Chatbot Platform",
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"datePublished": "2026-10-02T09:04:40.529Z",
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CVE-2026-80230 (GCVE-0-2026-80230)
Vulnerability from cvelistv5 – Published: 2026-09-06 17:48 – Updated: 2026-09-15 06:03
VLAI
EPSS
VEX
Title
OpenSSL pinning bypass
Summary
When `CURLOPT_PINNEDPUBLICKEY` is configured alongside options that disable
standard peer verification (`CURLOPT_SSL_VERIFYPEER = 0` and
`CURLOPT_SSL_VERIFYHOST = 0`), libcurl fails to enforce public key pinning on
connections established without a presented server certificate. Bypassing the
pinning check under these disabled-verification conditions allows
unauthenticated connections to succeed when they should be rejected.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 18:51 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| curl | curl |
Affected:
7.45.0 , < 8.14.2
(semver)
Affected: 8.15.0 , < 8.16.1 (semver) Affected: 8.17.0 , < 8.20.1 (semver) Affected: 8.21.0 , < 8.22.0 (semver) |
|
| curl | curl |
Affected:
8363656cb4e0c60a11d8531ead0ec43120b50591 , < 5267ed859d545534d0c21675a2b70af5a3b6e3ef
(git)
|
|
| curl | curl |
Affected:
8.21.0
Affected: 8.20.0 Affected: 8.19.0 Affected: 8.18.0 Affected: 8.17.0 Affected: 8.16.0 Affected: 8.15.0 Affected: 8.14.1 Affected: 8.14.0 Affected: 8.13.0 Affected: 8.12.1 Affected: 8.12.0 Affected: 8.11.1 Affected: 8.11.0 Affected: 8.10.1 Affected: 8.10.0 Affected: 8.9.1 Affected: 8.9.0 Affected: 8.8.0 Affected: 8.7.1 Affected: 8.7.0 Affected: 8.6.0 Affected: 8.5.0 Affected: 8.4.0 Affected: 8.3.0 Affected: 8.2.1 Affected: 8.2.0 Affected: 8.1.2 Affected: 8.1.1 Affected: 8.1.0 Affected: 8.0.1 Affected: 8.0.0 Affected: 7.88.1 Affected: 7.88.0 Affected: 7.87.0 Affected: 7.86.0 Affected: 7.85.0 Affected: 7.84.0 Affected: 7.83.1 Affected: 7.83.0 Affected: 7.82.0 Affected: 7.81.0 Affected: 7.80.0 Affected: 7.79.1 Affected: 7.79.0 Affected: 7.78.0 Affected: 7.77.0 Affected: 7.76.1 Affected: 7.76.0 Affected: 7.75.0 Affected: 7.74.0 Affected: 7.73.0 Affected: 7.72.0 Affected: 7.71.1 Affected: 7.71.0 Affected: 7.70.0 Affected: 7.69.1 Affected: 7.69.0 Affected: 7.68.0 Affected: 7.67.0 Affected: 7.66.0 Affected: 7.65.3 Affected: 7.65.2 Affected: 7.65.1 Affected: 7.65.0 Affected: 7.64.1 Affected: 7.64.0 Affected: 7.63.0 Affected: 7.62.0 Affected: 7.61.1 Affected: 7.61.0 Affected: 7.60.0 Affected: 7.59.0 Affected: 7.58.0 Affected: 7.57.0 Affected: 7.56.1 Affected: 7.56.0 Affected: 7.55.1 Affected: 7.55.0 Affected: 7.54.1 Affected: 7.54.0 Affected: 7.53.1 Affected: 7.53.0 Affected: 7.52.1 Affected: 7.52.0 Affected: 7.51.0 Affected: 7.50.3 Affected: 7.50.2 Affected: 7.50.1 Affected: 7.50.0 Affected: 7.49.1 Affected: 7.49.0 Affected: 7.48.0 Affected: 7.47.1 Affected: 7.47.0 Affected: 7.46.0 Affected: 7.45.0 |
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
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"options": [
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},
{
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},
{
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}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-08T18:51:52.168741Z",
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"status": "affected",
"version": "8.9.1"
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"status": "affected",
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"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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{
"status": "affected",
"version": "8.6.0"
},
{
"status": "affected",
"version": "8.5.0"
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{
"status": "affected",
"version": "8.4.0"
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{
"status": "affected",
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"status": "affected",
"version": "8.2.1"
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{
"status": "affected",
"version": "8.2.0"
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{
"status": "affected",
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{
"status": "affected",
"version": "8.1.1"
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"status": "affected",
"version": "8.1.0"
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{
"status": "affected",
"version": "8.0.1"
},
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"status": "affected",
"version": "7.88.1"
},
{
"status": "affected",
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"status": "affected",
"version": "7.87.0"
},
{
"status": "affected",
"version": "7.86.0"
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{
"status": "affected",
"version": "7.85.0"
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"status": "affected",
"version": "7.84.0"
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"status": "affected",
"version": "7.83.1"
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"status": "affected",
"version": "7.83.0"
},
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"status": "affected",
"version": "7.82.0"
},
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"status": "affected",
"version": "7.81.0"
},
{
"status": "affected",
"version": "7.80.0"
},
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"status": "affected",
"version": "7.79.1"
},
{
"status": "affected",
"version": "7.79.0"
},
{
"status": "affected",
"version": "7.78.0"
},
{
"status": "affected",
"version": "7.77.0"
},
{
"status": "affected",
"version": "7.76.1"
},
{
"status": "affected",
"version": "7.76.0"
},
{
"status": "affected",
"version": "7.75.0"
},
{
"status": "affected",
"version": "7.74.0"
},
{
"status": "affected",
"version": "7.73.0"
},
{
"status": "affected",
"version": "7.72.0"
},
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"status": "affected",
"version": "7.71.1"
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"status": "affected",
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},
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"status": "affected",
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"status": "affected",
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},
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},
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},
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"status": "affected",
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"x_generator": {
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"aliases": [
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"type": "finder"
},
{
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"id": "CWE-295"
},
"URL": "https://curl.se/docs/CVE-2026-80230.json",
"affects": "both",
"issue": "https://hackerone.com/reports/3969300",
"last_affected": "8.21.0",
"package": "curl",
"severity": "Low",
"www": "https://curl.se/docs/CVE-2026-80230.html"
},
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"id": "CURL-CVE-2026-80230",
"modified": "2026-09-07T10:34:51.00Z",
"published": "2026-09-02T08:00:00.00Z",
"schema_version": "1.5.0",
"summary": "OpenSSL pinning bypass"
}
}
},
"cveMetadata": {
"assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
"assignerShortName": "curl",
"cveId": "CVE-2026-80230",
"datePublished": "2026-09-06T17:48:16.262Z",
"dateReserved": "2026-08-26T04:24:25.568Z",
"dateUpdated": "2026-09-15T06:03:10.429Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-80164 (GCVE-0-2026-80164)
Vulnerability from cvelistv5 – Published: 2026-09-07 13:24 – Updated: 2026-09-08 16:55
VLAI
EPSS
VEX
Summary
Dell SCG 5.0 Appliance versions prior to 5.36.00.16 and Dell SCG 5.0 Application versions prior to 5.36.00.00, contains an Improper Certificate Validation vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to unauthorized access.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 16:41 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/kbdoc/en-in/00050342… | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Dell | Secure Connect Gateway 5.0 - Application |
Affected:
0 , < 5.36.00.00 or later
(semver)
|
|
| Dell | Secure Connect Gateway 5.0 - Appliance |
Affected:
0 , < 5.36.00.16 or later
(semver)
|
Date Public
2026-08-31 06:30
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CVE-2026-80125 (GCVE-0-2026-80125)
Vulnerability from cvelistv5 – Published: 2026-09-07 16:22 – Updated: 2026-09-09 14:46
VLAI
EPSS
VEX
Summary
Dell SCG 5.0 Appliance versions prior to 5.36.00.16 and Dell SCG 5.0 Application versions prior to 5.36.00.00, contains an Improper Certificate Validation vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to unauthorized access.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 14:46 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/kbdoc/en-in/00050342… | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Dell | Secure Connect Gateway 5.0 - Application |
Affected:
0 , < 5.36.00.00 or later
(semver)
|
|
| Dell | Secure Connect Gateway 5.0 - Appliance |
Affected:
0 , < 5.36.00.16 or later
(semver)
|
Date Public
2026-08-31 06:30
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CVE-2026-80122 (GCVE-0-2026-80122)
Vulnerability from cvelistv5 – Published: 2026-09-09 08:18 – Updated: 2026-09-09 13:01
VLAI
EPSS
VEX
Summary
Dell SCG 5.0 Appliance versions prior to 5.36.00.16 and Dell SCG 5.0 Application versions prior to 5.36.00.00, contains an Improper Certificate Validation vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to unauthorized access.
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 13:01 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/kbdoc/en-in/00050342… | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Dell | Secure Connect Gateway 5.0 - Application |
Affected:
0 , < 5.36.00.00 or later
(semver)
|
|
| Dell | Secure Connect Gateway 5.0 - Appliance |
Affected:
0 , < 5.36.00.16 or later
(semver)
|
Date Public
2026-08-31 06:30
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CVE-2026-79975 (GCVE-0-2026-79975)
Vulnerability from cvelistv5 – Published: 2026-09-07 16:08 – Updated: 2026-09-08 12:45
VLAI
EPSS
VEX
Summary
Dell SCG 5.0 Appliance versions prior to 5.36.00.16 and Dell SCG 5.0 Application versions prior to 5.36.00.00, contains an Improper Certificate Validation vulnerability. A low privileged attacker with local access could potentially exploit this vulnerability, leading to server-side request forgery.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 12:45 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/kbdoc/en-in/00050342… | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Dell | Secure Connect Gateway 5.0 - Application |
Affected:
0 , < 5.36.00.00 or later
(semver)
|
|
| Dell | Secure Connect Gateway 5.0 - Appliance |
Affected:
0 , < 5.36.00.16 or later
(semver)
|
Date Public
2026-08-31 06:30
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CVE-2026-79967 (GCVE-0-2026-79967)
Vulnerability from cvelistv5 – Published: 2026-09-09 08:34 – Updated: 2026-09-09 16:01
VLAI
EPSS
VEX
Summary
Dell SCG 5.0 Appliance versions prior to 5.36.00.16 and Dell SCG 5.0 Application versions prior to 5.36.00.00, contains an Improper Certificate Validation vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to protection mechanism bypass.
Severity
5.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 15:49 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/kbdoc/en-in/00050342… | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Dell | Secure Connect Gateway 5.0 - Application |
Affected:
0 , < 5.36.00.00 or later
(semver)
|
|
| Dell | Secure Connect Gateway 5.0 - Appliance |
Affected:
0 , < 5.36.00.16 or later
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|
Date Public
2026-08-31 06:30
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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.