EUVD-2026-35046

A weakness in the certificate validation logic of the deprecated IKEv1 key exchange may allow an unauthenticated attacker positioned as a man-in-the-middle to bypass certificate validation in VPN site-to-site connections that use certificate-based authentication. Successful exploitation could all...

CVE-2026-50752 Certificate Validation Bypass in VPN Site-to-Site Connections Using IKEv1

A weakness in the certificate validation logic of the deprecated IKEv1 key exchange may allow an unauthenticated attacker positioned as a man-in-the-middle to bypass certificate validation in VPN site-to-site connections that use certificate-based authentication. Successful exploitation could all...

PT-2026-47277

A weakness in the certificate validation logic of the deprecated IKEv1 key exchange may allow an unauthenticated attacker positioned as a man-in-the-middle to bypass certificate validation in VPN site-to-site connections that use certificate-based authentication. Successful exploitation could all...

CVE-2026-46579

A flaw was found in the OpenShift Router. When a Route has insecureEdgeTerminationPolicy set to Allow, the HTTP frontend does not remove X-SSL-Client- headers from incoming requests. This allows an unauthenticated attacker to send plain HTTP requests with crafted X-SSL-Client- headers. As a resul...

Improper Enforcement of Behavioral Workflow

Overview Affected versions of this package are vulnerable to Improper Enforcement of Behavioral Workflow in the TLS 1.3 implementation, which processes ApplicationData records before receiving the Finished message. An attacker can bypass certificate-based client authentication by omitting the...

CVE-2025-30042

The CGM CLININET system provides smart card authentication; however, authentication is conducted locally on the client device, and, in reality, only the certificate number is used for access verification. As a result, possession of the certificate number alone is sufficient for authentication,...

PT-2026-4747

The exos 9300 application can be used to configure Access Managers e.g. 92xx, 9230 and 9290. The configuration is done in a graphical user interface on the dormakaba exos server. As soon as the save button is clicked in exos 9300, the whole configuration is sent to the selected Access Manager via...

CVE-2025-9312 Improper Certificate-Based Authentication Enforcement in Multiple WSO2 Products

A missing authentication enforcement vulnerability exists in the mutual TLS mTLS implementation used by System REST APIs and SOAP services in multiple WSO2 products. Due to improper validation of client certificate–based authentication in certain default configurations, the affected components ma...

GHSA-JHPV-4Q4F-43G5 Akka.Remote TLS did not properly implement certificate-based authentication

Impact This is a critical network security vulnerability for Akka.Remote users who have SSL / TLS enabled on their Akka.Remote connections and were expecting certificate-based authentication to be enforced on all peers attempting to join the network. In all versions of Akka.Remote from v1.2.0 to...

CVE-2023-28857

Apereo CAS is an open source multilingual single sign-on solution for the web. Apereo CAS can be configured to use authentication based on client X509 certificates. These certificates can be provided via TLS handshake or a special HTTP header, such as “sslclientcert”. When checking the validity o...

Granular sudo Permissions for Installing Veeam Plug-ins for Enterprise Applications using Protection Groups

Challenge This article provides an example granular 'sudoer' configuration for the Linux account that will be used by Veeam Backup & Replication when installing Veeam Plug-Ins for Enterprise Applications using a Protection Group, specifically for Veeam Plug-in for Oracle RMAN and Veeam Plug-in fo...

Error: Connection Failed - Citrix Endpoint Management with Certificate Based Authentication

Warning Event ID = 39 or ID = 41 on Windows Server 2008 R2 SP1 and Windows Server 2008 SP2 before February 11,2025. "Connection failed" will be shown by clicking Test Connection in PKI Entities after February 11, 2025...

Citrix Endpoint Management: Active Directory Issues

Introduction Active Directory AD integration issues in XenMobile can range from synchronization errors to authentication failures and configuration complications. This series of articles offers troubleshooting guidance and best practices to address these challenges, ensuring smooth operation and...

python: TLS handshake bypass

Python ssl.SSLSocket is vulnerable to a bypass of the TLS handshake in certain instances for HTTPS servers and other server-side protocols that use TLS client authentication such as mTLS. This issue may result in a breach of integrity as its possible to modify or delete resources that are...

Anomaly detection in certificate-based TGT requests

One of the most complex yet effective methods of gaining unauthorized access to corporate network resources is an attack using forged certificates. Attackers create such certificates to fool the Key Distribution Center KDC into granting access to the target companys network. An example of such an...

MS KB5014754 - Audit events found for FAS

As Per the Microsoft KB linked below, we have found audit events on our domain controllers that indicate we will be impacted when this change is enforced. We need the remediation steps, so we can implement them before we're impacted...

SA45100 - CVE-2022-0778-OpenSSL-Vulnerability may lead to DoS attack

CVE-2022-0778 A vulnerability has been reported on the 15th of March 2022 under https://nvd.nist.gov/vuln/detail/CVE-2022-0778 Description - A flaw was found in OpenSSL. It is possible to trigger an infinite loop by crafting a certificate that has invalid explicit curve parameters. More details...

sssd: libsss_certmap fails to sanitise certificate data used in LDAP filters

A vulnerability was found in SSSD, in the libssscertmap functionality. PKINIT enables a client to authenticate to the KDC using an X.509 certificate and the corresponding private key, rather than a passphrase or keytab. FreeIPA uses mapping rules to map a certificate presented during a PKINIT...

SSSD 注入漏洞

SSSD is a daemon that provides access to local or remote identity and authentication resources. SSSD suffers from an injection vulnerability that stems from PKINIT enabling clients to authenticate to a KDC using an X.509 certificate and corresponding private key instead of a passphrase or key tab...

Do more with less—Discover the latest Microsoft Entra innovations

It has certainly been another intense year. From the ongoing pandemic to the Great Reshuffle to economic uncertainty, it’s truly felt like the only constant is change.1 In this economy, many organizations are looking for efficiencies. This is putting pressure on security teams, along with everyon...