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CWE-295

Improper Certificate Validation

1152 CVEs Avg CVSS 6.9 MITRE
124
CRITICAL
465
HIGH
510
MEDIUM
50
LOW
149
POC
4
KEV

Monthly

CVE-2026-41012 HIGH PATCH This Week

Improper certificate validation in Cloud Foundry's bosh-vsphere-cpi-release exposes vCenter administrator credentials to any attacker with a network position between the BOSH Director and vCenter. The vSphere CPI transmits credentials via HTTP Basic authentication on every routine cloud infrastructure operation and fails to enforce TLS certificate authenticity, allowing a rogue endpoint to impersonate the vCenter REST API and silently capture those credentials. Successful interception yields full administrative control over every virtual machine, datastore, and network segment managed by the compromised vCenter instance. No public exploit code has been identified at time of analysis, and this CVE does not appear in the CISA KEV catalog.

Information Disclosure VMware Bosh Vsphere Cpi Release
NVD VulDB
CVSS 3.1
7.7
EPSS
0.1%
CVE-2025-64649 MEDIUM PATCH This Month

IBM Concert versions 1.0.0 through 2.3.1 expose deployments to man-in-the-middle attacks due to improper TLS certificate validation (CWE-295), enabling remote attackers to intercept and manipulate communications between Concert components. The integrity impact is rated High by IBM's own CVSS scoring, meaning an adversary successfully positioned in the network path can perform unauthorized actions against affected Concert instances. No public exploit code has been identified at time of analysis, and IBM has released a patch via advisory 7285337.

Authentication Bypass IBM Concert
NVD
CVSS 3.1
5.9
EPSS
0.2%
CVE-2025-36290 MEDIUM PATCH This Month

IBM Integrated Analytics System versions 1.0.0.0 through 1.0.31.0 fails to properly validate TLS certificates, enabling network-positioned attackers to conduct man-in-the-middle attacks and intercept sensitive data in transit. IBM has confirmed the issue and released a patch via advisory node/7285149. No public exploit code or CISA KEV listing has been identified at time of analysis; however, the network-accessible attack vector with no authentication requirement raises the relevance for deployments where the system communicates across untrusted network segments.

Information Disclosure IBM Integrated Analytics System
NVD
CVSS 3.1
5.9
EPSS
0.2%
CVE-2026-81518 HIGH PATCH This Week

Mongosqld in the MongoDB BI Connector requests but does not enforce client certificates during the TLS handshake when configured with a CA file, silently accepting connections from clients that present no certificate at all. Deployments that rely on client certificate authentication as the sole means of identifying users are fully exposed - any remote party with network access to the listener can establish a session and read all MongoDB data surfaced through the SQL interface. The CVSS 4.0 score of 8.7 reflects the network-accessible, zero-privilege nature of the flaw; no public exploit code or CISA KEV listing has been identified at time of analysis, and real-world impact is bounded by a specific non-default configuration prerequisite.

Information Disclosure Bi Connector
NVD
CVSS 4.0
8.7
EPSS
0.2%
CVE-2026-55215 HIGH PATCH GHSA This Week

Credential disclosure in the MariaDB Connector for Node.js (npm: mariadb) exposes plaintext database passwords to active network attackers when SSL/TLS is configured without a CA or server certificate. Fingerprint-based server identity validation is sequenced after the authentication exchange, so a man-in-the-middle presenting any certificate receives the password before the connection is ultimately rejected and closed. Affected branches span all releases below 3.2.4, 3.3.3, 3.4.6, and 3.5.3; no CISA KEV entry or public proof-of-concept exists at time of analysis, though the flaw is structurally exploitable by any on-path attacker against the specific misconfiguration.

Information Disclosure Microsoft
NVD GitHub
CVSS 3.1
7.5
EPSS
0.4%
CVE-2026-18717 CRITICAL CISA Emergency

TLS peer impersonation in Applied Systems Engineering's ASE2000 v2 (versions 2.35 through 2.37) lets a network-positioned attacker complete the TLS handshake as a fraudulent trusted peer because the client fails to properly validate the server certificate (CWE-295). Successful exploitation exposes and allows tampering with protected SCADA/RTU communications carried over the ostensibly secure channel. Reported through CISA ICS-CERT (ICSA-26-239-04); no public exploit identified at time of analysis and it is not listed in CISA KEV.

Information Disclosure Ase2000 V2
NVD GitHub
CVSS 4.0
9.1
EPSS
0.2%
CVE-2026-74774 HIGH PATCH This Week

Improper certificate validation in Dell PowerProtect One (versions below 20.3.0.0) enables a remote unauthenticated attacker to bypass TLS certificate checks, intercepting or decrypting protected communications between the appliance and connected systems. The CVSS 3.1 base score is 7.5 with high confidentiality impact, though EPSS sits at 0.14% (4th percentile) and SSVC records exploitation as 'none,' indicating no observed threat-actor activity. Vendor patch DSA-2026-369 is available and upgrade to 20.3.0.0 or later is the primary remediation.

Authentication Bypass Dell Powerprotect One
NVD
CVSS 3.1
7.5
EPSS
0.1%
CVE-2026-81034 HIGH This Week

Unconditional TLS certificate verification bypass in Netmaker's SMTP client (pro/email/smtp.go, v1.6.0) exposes sensitive email traffic to network-positioned adversaries. The hardcoded InsecureSkipVerify=true setting - present directly beneath a developer comment acknowledging it should be false in production - means Netmaker accepts any certificate its mail relay presents, including one supplied by an intercepting party. Password-reset tokens and enrollment links transiting that connection can be captured and replayed by the attacker before the legitimate recipient acts on them. No public exploit is identified at time of analysis, and the flaw is absent from the development branch but confirmed present in the latest release.

Information Disclosure Netmaker
NVD GitHub
CVSS 4.0
8.3
EPSS
0.2%
CVE-2026-54548 PyPI LOW PATCH GHSA Monitor

SSH host key verification is persistently disabled in Siemens kas versions prior to 5.4 when the tool's internal SSH key setup path is triggered via SSH_PRIVATE_KEY or SSH_PRIVATE_KEY_FILE and the invoking user has no pre-existing ~/.ssh/config. The tool writes a global Host * rule with StrictHostKeyChecking no to ~/.ssh/config and does not remove it upon exit, leaving all subsequent SSH sessions of that local user silently accepting unverified host keys. No public exploit code exists and this vulnerability is not listed in CISA KEV; the low CVSS score of 3.3 correctly reflects a constrained local, multi-condition attack path, though the persistence of the misconfiguration indefinitely extends the exposure window beyond any single kas invocation.

Information Disclosure Kas
NVD GitHub
CVSS 3.1
3.3
EPSS
0.1%
CVE-2026-65084 HIGH This Week

Improper certificate validation in NVIDIA NemoClaw for Linux exposes the deployment process to network-based interception, enabling attackers with man-in-the-middle positioning to achieve information disclosure, data tampering, code execution, and privilege escalation. All currently tracked versions are affected per the wildcard CPE. No public exploit or CISA KEV listing has been identified at time of analysis, though the multi-impact severity and CVSS 8.1 rating place this in the high-priority tier for affected operators.

Nvidia Information Disclosure RCE Nemoclaw
NVD GitHub
CVSS 3.1
8.1
EPSS
0.3%
EPSS 0% CVSS 7.7
HIGH PATCH This Week

Improper certificate validation in Cloud Foundry's bosh-vsphere-cpi-release exposes vCenter administrator credentials to any attacker with a network position between the BOSH Director and vCenter. The vSphere CPI transmits credentials via HTTP Basic authentication on every routine cloud infrastructure operation and fails to enforce TLS certificate authenticity, allowing a rogue endpoint to impersonate the vCenter REST API and silently capture those credentials. Successful interception yields full administrative control over every virtual machine, datastore, and network segment managed by the compromised vCenter instance. No public exploit code has been identified at time of analysis, and this CVE does not appear in the CISA KEV catalog.

Information Disclosure VMware Bosh Vsphere Cpi Release
NVD VulDB
EPSS 0% CVSS 5.9
MEDIUM PATCH This Month

IBM Concert versions 1.0.0 through 2.3.1 expose deployments to man-in-the-middle attacks due to improper TLS certificate validation (CWE-295), enabling remote attackers to intercept and manipulate communications between Concert components. The integrity impact is rated High by IBM's own CVSS scoring, meaning an adversary successfully positioned in the network path can perform unauthorized actions against affected Concert instances. No public exploit code has been identified at time of analysis, and IBM has released a patch via advisory 7285337.

Authentication Bypass IBM Concert
NVD
EPSS 0% CVSS 5.9
MEDIUM PATCH This Month

IBM Integrated Analytics System versions 1.0.0.0 through 1.0.31.0 fails to properly validate TLS certificates, enabling network-positioned attackers to conduct man-in-the-middle attacks and intercept sensitive data in transit. IBM has confirmed the issue and released a patch via advisory node/7285149. No public exploit code or CISA KEV listing has been identified at time of analysis; however, the network-accessible attack vector with no authentication requirement raises the relevance for deployments where the system communicates across untrusted network segments.

Information Disclosure IBM Integrated Analytics System
NVD
EPSS 0% CVSS 8.7
HIGH PATCH This Week

Mongosqld in the MongoDB BI Connector requests but does not enforce client certificates during the TLS handshake when configured with a CA file, silently accepting connections from clients that present no certificate at all. Deployments that rely on client certificate authentication as the sole means of identifying users are fully exposed - any remote party with network access to the listener can establish a session and read all MongoDB data surfaced through the SQL interface. The CVSS 4.0 score of 8.7 reflects the network-accessible, zero-privilege nature of the flaw; no public exploit code or CISA KEV listing has been identified at time of analysis, and real-world impact is bounded by a specific non-default configuration prerequisite.

Information Disclosure Bi Connector
NVD
EPSS 0% CVSS 7.5
HIGH PATCH This Week

Credential disclosure in the MariaDB Connector for Node.js (npm: mariadb) exposes plaintext database passwords to active network attackers when SSL/TLS is configured without a CA or server certificate. Fingerprint-based server identity validation is sequenced after the authentication exchange, so a man-in-the-middle presenting any certificate receives the password before the connection is ultimately rejected and closed. Affected branches span all releases below 3.2.4, 3.3.3, 3.4.6, and 3.5.3; no CISA KEV entry or public proof-of-concept exists at time of analysis, though the flaw is structurally exploitable by any on-path attacker against the specific misconfiguration.

Information Disclosure Microsoft
NVD GitHub
EPSS 0% CVSS 9.1
CRITICAL Emergency

TLS peer impersonation in Applied Systems Engineering's ASE2000 v2 (versions 2.35 through 2.37) lets a network-positioned attacker complete the TLS handshake as a fraudulent trusted peer because the client fails to properly validate the server certificate (CWE-295). Successful exploitation exposes and allows tampering with protected SCADA/RTU communications carried over the ostensibly secure channel. Reported through CISA ICS-CERT (ICSA-26-239-04); no public exploit identified at time of analysis and it is not listed in CISA KEV.

Information Disclosure Ase2000 V2
NVD GitHub
EPSS 0% CVSS 7.5
HIGH PATCH This Week

Improper certificate validation in Dell PowerProtect One (versions below 20.3.0.0) enables a remote unauthenticated attacker to bypass TLS certificate checks, intercepting or decrypting protected communications between the appliance and connected systems. The CVSS 3.1 base score is 7.5 with high confidentiality impact, though EPSS sits at 0.14% (4th percentile) and SSVC records exploitation as 'none,' indicating no observed threat-actor activity. Vendor patch DSA-2026-369 is available and upgrade to 20.3.0.0 or later is the primary remediation.

Authentication Bypass Dell Powerprotect One
NVD
EPSS 0% CVSS 8.3
HIGH This Week

Unconditional TLS certificate verification bypass in Netmaker's SMTP client (pro/email/smtp.go, v1.6.0) exposes sensitive email traffic to network-positioned adversaries. The hardcoded InsecureSkipVerify=true setting - present directly beneath a developer comment acknowledging it should be false in production - means Netmaker accepts any certificate its mail relay presents, including one supplied by an intercepting party. Password-reset tokens and enrollment links transiting that connection can be captured and replayed by the attacker before the legitimate recipient acts on them. No public exploit is identified at time of analysis, and the flaw is absent from the development branch but confirmed present in the latest release.

Information Disclosure Netmaker
NVD GitHub
EPSS 0% CVSS 3.3
LOW PATCH Monitor

SSH host key verification is persistently disabled in Siemens kas versions prior to 5.4 when the tool's internal SSH key setup path is triggered via SSH_PRIVATE_KEY or SSH_PRIVATE_KEY_FILE and the invoking user has no pre-existing ~/.ssh/config. The tool writes a global Host * rule with StrictHostKeyChecking no to ~/.ssh/config and does not remove it upon exit, leaving all subsequent SSH sessions of that local user silently accepting unverified host keys. No public exploit code exists and this vulnerability is not listed in CISA KEV; the low CVSS score of 3.3 correctly reflects a constrained local, multi-condition attack path, though the persistence of the misconfiguration indefinitely extends the exposure window beyond any single kas invocation.

Information Disclosure Kas
NVD GitHub
EPSS 0% CVSS 8.1
HIGH This Week

Improper certificate validation in NVIDIA NemoClaw for Linux exposes the deployment process to network-based interception, enabling attackers with man-in-the-middle positioning to achieve information disclosure, data tampering, code execution, and privilege escalation. All currently tracked versions are affected per the wildcard CPE. No public exploit or CISA KEV listing has been identified at time of analysis, though the multi-impact severity and CVSS 8.1 rating place this in the high-priority tier for affected operators.

Nvidia Information Disclosure RCE +1
NVD GitHub

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