CVE-2026-66154
An insufficient certificate validation in a privileged communication workflow, was identified in a GMS application 9.5.1 (Build 9510.1044) a
CVSS
8.3
High
EPSS
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KEV
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Exploit Today
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0-100
Published: Aug 11, 2026 · Last modified: Aug 11, 2026 · CWE-295
Not enough EPSS history yet.
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.
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-71290——
———Improper TLS hostname verification vulnerability in Apache HttpComponents Client 5.4 or newer. HostnameVerificationPolicy#BUILTIN setting has no effect when used with the async version of HttpClient. An attacker that can intercept and modify traffic between the client and
the server can impersonate the server by presenting a valid certificate
for a different domain.
Please note the classic version of HttpClient is not affected by this vulnerability.
Affected users are recommended to upgrade to at least version 5.6.4, which fixes the issue.5hCVE-2026-484375.5 MED—
———CAI Content Credentials is affected by an Improper Certificate Validation vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass security measures and gain unauthorized write access. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page.9hCVE-2026-11814——
———A command injection vulnerability in the listed NETGEAR models allows a network-adjacent attacker with the ability to intercept and modify local network traffic (attacker-in-the-middle) to compromise the confidentiality and integrity of the affected device. This issue is limited to certain region-specific SKUs.10hCVE-2026-181298.1 HIG—
———Cleartext transmission of sensitive information in the Core of Ivanti Endpoint Manager before version 2024 SU7 allows a remote unauthenticated attacker in a MITM position to leak credentials for external SQL connections.11hCVE-2026-155547.4 HIG—
——0the Undertow AJP listener honours forged ssl_cert and is_ssl AJP attributes without requiring any shared-secret authentication. This enables an unauthenticated attacker with direct TCP access to port 8009 to bypass CLIENT-CERT authentication by injecting a forged X.509 certificate via the AJP protocol.5hCVE-2026-667606.4 MED—
——0SAP Approuter does not correctly validate client certificates in certain callback flows. An attacker with low privileges, holding a certificate from the same trusted authority with matching subject values, could bypass the identity check. This complexity makes the attack difficult to execute. Successful exploitation could allow impersonation of a trusted internal component, resulting in a high impact on integrity and a low impact on confidentiality and availability.11h