Common Weakness Enumeration
CWE-295
AllowedImproper Certificate Validation
Abstraction: Base · Status: Draft
The product does not validate, or incorrectly validates, a certificate.
2039 vulnerabilities reference this CWE, most recent first.
CVE-2026-66406 (GCVE-0-2026-66406)
Vulnerability from cvelistv5 – Published: 2026-08-10 08:00 – Updated: 2026-08-10 17:54
VLAI
EPSS
VEX
Summary
DEEBOT PRO M1 and DEEBOT PRO K1VAC use wget command with server certificate validation disabled.
A man-in-the-middle attack may allow to obtain and/or alter communications of the affected products. As a result, arbitrary code may be executed with the administrative privilege.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-10 17:52 UTC
CWE
- CWE-295 - Improper certificate validation
Assigner
References
2 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| ECOVACS ROBOTICS | DEEBOT PRO M1 |
Affected:
0 , < M1-1.7.27
(semver)
|
|
| ECOVACS ROBOTICS | DEEBOT PRO K1VAC |
Affected:
0 , < V1.7.821
(semver)
|
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CVE-2026-66404 (GCVE-0-2026-66404)
Vulnerability from cvelistv5 – Published: 2026-08-10 07:59 – Updated: 2026-08-10 17:47
VLAI
EPSS
VEX
Summary
DEEBOT PRO M1 and DEEBOT PRO K1VAC do not validate server certificates in MQTT communications. Operation logs and activity logs stored on the affected products may be retrieved.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-10 17:45 UTC
CWE
- CWE-295 - Improper certificate validation
Assigner
References
2 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| ECOVACS ROBOTICS | DEEBOT PRO M1 |
Affected:
0 , < M1-1.7.27
(semver)
|
|
| ECOVACS ROBOTICS | DEEBOT PRO K1VAC |
Affected:
0 , < V1.7.821
(semver)
|
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CVE-2026-66402 (GCVE-0-2026-66402)
Vulnerability from cvelistv5 – Published: 2026-08-01 12:22 – Updated: 2026-08-05 03:56
VLAI
EPSS
VEX
Title
FreeRDP before 3.29.0 TLS Certificate Identity Validation Bypass
Summary
FreeRDP before 3.29.0 (affected versions <= 3.28.0) contains multiple TLS certificate identity validation weaknesses in tls_verify_certificate(), tls_match_hostname(), and x509_utils_get_dns_names(). Because FreeRDP performs custom Common Name and DNS SAN string matching instead of using OpenSSL's length-aware identity validation APIs, it (1) truncates DNS SAN values at embedded NUL bytes (accepting e.g. 'victim.example\0.attacker.example' as 'victim.example'), (2) accepts a matching Common Name even when non-matching DNS SAN entries are present, and (3) accepts IP-literal targets via DNS/CN matching without comparing iPAddress SANs. Under a trusted or misissued certificate chain, an attacker positioned to present such a certificate can bypass server identity verification, weakening TLS server authentication.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-04 00:00 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/FreeRDP/FreeRDP/security/advis… | vendor-advisory |
| https://github.com/FreeRDP/FreeRDP/commit/b9533f0… | patch |
| https://www.vulncheck.com/advisories/freerdp-befo… | third-party-advisory |
Impacted products
Date Public
2026-07-15 00:00
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CVE-2026-66154 (GCVE-0-2026-66154)
Vulnerability from cvelistv5 – Published: 2026-08-11 20:12 – Updated: 2026-08-12 14:47
VLAI
EPSS
VEX
Summary
An insufficient certificate validation in a privileged communication workflow, was identified in a GMS application 9.5.1 (Build 9510.1044) and earlier versions which, under a successful MitM attack and controlled network conditions, could permit unauthorized changes.
Severity
8.3 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-12 04:00 UTC
CWE
- CWE-295 - Improper certificate validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://psirt.global.sonicwall.com/vuln-detail/SN… | vendor-advisory |
Impacted products
Date Public
2026-08-11 20:00
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CVE-2026-65325 (GCVE-0-2026-65325)
Vulnerability from cvelistv5 – Published: 2026-07-29 08:23 – Updated: 2026-07-29 12:19
VLAI
EPSS
VEX
Title
Apache Traffic Server: HTTP/2 multiplexed origin sessions are reused without certificate re-verification
Summary
Apache Traffic Server reuses multiplexed HTTP/2 origin connections without verifying the server certificate covers the new request hostname.
This issue affects Apache Traffic Server: from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.
Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.
Severity
4.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 12:19 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/5prl9glcm9g2swnq9… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Traffic Server |
Affected:
9.0.0 , ≤ 9.2.14
(semver)
Affected: 10.0.0 , ≤ 10.1.3 (semver) |
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CVE-2026-65084 (GCVE-0-2026-65084)
Vulnerability from cvelistv5 – Published: 2026-08-25 20:15 – Updated: 2026-08-26 18:24
VLAI
EPSS
VEX
Summary
NVIDIA NemoClaw for Linux contains a vulnerability in its deployment process, where an attacker could cause improper certificate validation. A successful exploit of this vulnerability might lead to information disclosure, data tampering, code execution, and escalation of privileges.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 18:22 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
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CVE-2026-64993 (GCVE-0-2026-64993)
Vulnerability from cvelistv5 – Published: 2026-08-06 13:38 – Updated: 2026-08-07 03:55
VLAI
EPSS
VEX
Summary
Dell RVTools versions prior to 4.8.1, contains an improper certificate validation vulnerability in the collector. A remote unauthenticated attacker could potentially exploit this vulnerability leading to loss of confidentiality and integrity.
Severity
6.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 00:00 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/kbdoc/en-in/00049474… | vendor-advisory |
Impacted products
Date Public
2026-08-03 06:30
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CVE-2026-63650 (GCVE-0-2026-63650)
Vulnerability from cvelistv5 – Published: 2026-08-14 22:13 – Updated: 2026-08-17 15:38
VLAI
EPSS
VEX
Summary
OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-17 15:22 UTC
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://community.openvpn.net/Security%20Announce… | vendor-advisory |
| https://community.openvpn.net/ReleaseHistory#open… | release-notes |
Impacted products
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CVE-2026-63336 (GCVE-0-2026-63336)
Vulnerability from cvelistv5 – Published: 2026-08-18 16:29 – Updated: 2026-08-18 17:34
VLAI
EPSS
VEX
Title
RabbitMQ Java client: TrustEverythingTrustManager used by default in useSslProtocol() enables MITM
Summary
The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. Prior to 5.33.0, com.rabbitmq.client.ConnectionFactory.useSslProtocol() and ConnectionFactory.useSslProtocol(String) configure com.rabbitmq.client.TrustEverythingTrustManager and leave hostname verification disabled, causing arbitrary server certificates, including self-signed certificates, to be accepted. A network attacker able to intercept a TLS connection can impersonate the RabbitMQ broker, read protected AMQP traffic, and modify traffic without certificate or hostname validation. The fix changes the production TLS helpers to use the JVM default trust store and enables hostname verification, while retaining an explicitly named development-only no-verification helper. This issue is fixed in version 5.33.0.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 17:30 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/rabbitmq/rabbitmq-java-client/… | x_refsource_CONFIRM |
| https://github.com/rabbitmq/rabbitmq-java-client/… | x_refsource_MISC |
| https://github.com/rabbitmq/rabbitmq-java-client/… | x_refsource_MISC |
| https://github.com/rabbitmq/rabbitmq-java-client/… | x_refsource_MISC |
| https://github.com/rabbitmq/rabbitmq-java-client/… | x_refsource_MISC |
| https://github.com/rabbitmq/rabbitmq-java-client/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| rabbitmq | rabbitmq-java-client |
Affected:
< 5.33.0
|
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CVE-2026-59836 (GCVE-0-2026-59836)
Vulnerability from cvelistv5 – Published: 2026-07-14 15:15 – Updated: 2026-07-15 03:59
VLAI
EPSS
VEX
Summary
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 <insert attack vector here>
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-14 00:00 UTC
CWE
- CWE-295 - Information disclosure
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Fortinet | FortiClientEMS |
Affected:
7.4.3 , ≤ 7.4.5
(semver)
Affected: 7.4.0 , ≤ 7.4.1 (semver) Affected: 7.2.12 , ≤ 7.2.14 (semver) Affected: 7.2.0 , ≤ 7.2.10 (semver) cpe:2.3:a:fortinet:forticlientems:7.4.5:*:*:*:*:*:*:* cpe:2.3:a:fortinet:forticlientems:7.4.4:*:*:*:*:*:*:* cpe:2.3:a:fortinet:forticlientems:7.4.3:*:*:*:*:*:*:* cpe:2.3:a:fortinet:forticlientems:7.4.1:*:*:*:*:*:*:* cpe:2.3:a:fortinet:forticlientems:7.4.0:*:*:*:*:*:*:* cpe:2.3:a:fortinet:forticlientems:7.2.14:*:*:*:*:*:*:* cpe:2.3:a:fortinet:forticlientems:7.2.13:*:*:*:*:*:*:* cpe:2.3:a:fortinet:forticlientems:7.2.12:*:*:*:*:*:*:* cpe:2.3:a:fortinet:forticlientems:7.2.10:*:*:*:*:*:*:* cpe:2.3:a:fortinet:forticlientems:7.2.9:*:*:*:*:*:*:* cpe:2.3:a:fortinet:forticlientems:7.2.8:*:*:*:*:*:*:* cpe:2.3:a:fortinet:forticlientems:7.2.7:*:*:*:*:*:*:* cpe:2.3:a:fortinet:forticlientems:7.2.6:*:*:*:*:*:*:* cpe:2.3:a:fortinet:forticlientems:7.2.5:*:*:*:*:*:*:* cpe:2.3:a:fortinet:forticlientems:7.2.4:*:*:*:*:*:*:* cpe:2.3:a:fortinet:forticlientems:7.2.3:*:*:*:*:*:*:* cpe:2.3:a:fortinet:forticlientems:7.2.2:*:*:*:*:*:*:* cpe:2.3:a:fortinet:forticlientems:7.2.1:*:*:*:*:*:*:* cpe:2.3:a:fortinet:forticlientems:7.2.0:*:*:*:*:*:*:* |
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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.