CVE-2026-4740

CVE-2026-4740 affects Open Cluster Management (OCM), the tech behind Red Hat ACM. The issue is improper validation of Kubernetes client certificate renewal, which can let a managed-cluster admin forge a client certificate accepted by the OCM controller. This enables cross-cluster privilege escala...

CVE-2026-4740 Rhacm: open cluster management (ocm): cross-cluster privilege escalation via improper kubernetes client certificate renewal validation

A flaw was found in Open Cluster Management OCM, the technology underlying Red Hat Advanced Cluster Management ACM. Improper validation of Kubernetes client certificate renewal allows a managed cluster administrator to forge a client certificate that can be approved by the OCM controller. This...

CVE-2026-4740 Rhacm: open cluster management (ocm): cross-cluster privilege escalation via improper kubernetes client certificate renewal validation

A flaw was found in Open Cluster Management OCM, the technology underlying Red Hat Advanced Cluster Management ACM. Improper validation of Kubernetes client certificate renewal allows a managed cluster administrator to forge a client certificate that can be approved by the OCM controller. This...

CVE-2026-4740

A flaw was found in Open Cluster Management OCM, the technology underlying Red Hat Advanced Cluster Management ACM. Improper validation of Kubernetes client certificate renewal allows a managed cluster administrator to forge a client certificate that can be approved by the OCM controller. This...

freerdp: FreeRDP: Denial of Service via FastGlyph parsing buffer overflow

A flaw was found in FreeRDP. A malicious server can exploit a vulnerability in FastGlyph parsing, which improperly trusts data length without sufficient validation. This can lead to a client-side global buffer overflow, resulting in a denial of service DoS due to a crash. For this vulnerability t...

freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation

A use after free flaw was found in FreeRDP. AUDIN format renegotiation frees the active format list while the capture thread continues using audin-format, leading to a use after free in audioformatcompatible. A malicious server can trigger a client‑side heap use after free causing a crash...

OPENSUSE-SU-2026:20465-1 Security update for tigervnc

This update for tigervnc fixes the following issues: - CVE-2026-34352: Fixed permissions to prevent other users from observing the screen, or modifying what is sent to the client. bsc1260871...

Important: Red Hat Security Advisory: freerdp security update

An update for freerdp is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring...

EUVD-2026-19586

Improper validation and restriction of a classpath path name vulnerability in Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ All. In two instances when creating a Stomp consumer and also browsing messages in the Web console an authenticated user provided "key" value could be...

Directory Traversal

Overview org.apache.activemq:activemq-client is a high performance Apache 2.0 licensed Message Broker and JMS 1.1 implementation. Affected versions of this package are vulnerable to Directory Traversal via improper validation of classpath path names in the key parameter during the creation of a...

CVE-2026-33227

Improper validation and restriction of a classpath path name vulnerability in Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ Web, Apache ActiveMQ. In two instances when creating a Stomp consumer and also browsing messages in the Web console an authenticated...

UBUNTU-CVE-2026-33227

Improper validation and restriction of a classpath path name vulnerability in Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ Web, Apache ActiveMQ. In two instances when creating a Stomp consumer and also browsing messages in the Web console an authenticated...

CVE-2026-33227

Improper validation and restriction of a classpath path name vulnerability in Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ All. In two instances when creating a Stomp consumer and also browsing messages in the Web console an authenticated user provided "key" value could be...

CVE-2026-33227 Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ Web, Apache ActiveMQ: Improper Limitation of a Pathname to a Restricted Classpath Directory

Improper validation and restriction of a classpath path name vulnerability in Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ Web, Apache ActiveMQ. In two instances when creating a Stomp consumer and also browsing messages in the Web console an authenticated...

freerdp: FreeRDP has a heap-buffer-overflow in urb_select_interface

A heap buffer overflow has been discovered in FreeRDP. The URBDRC client uses server-supplied interface numbers as array indices without bounds checks, causing an out-of-bounds read in libusbudevselectinterface...

freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation

A use after free flaw was found in FreeRDP. AUDIN format renegotiation frees the active format list while the capture thread continues using audin-format, leading to a use after free in audioformatcompatible. A malicious server can trigger a client‑side heap use after free causing a crash...

freerdp: FreeRDP: Denial of Service via FastGlyph parsing buffer overflow

A flaw was found in FreeRDP. A malicious server can exploit a vulnerability in FastGlyph parsing, which improperly trusts data length without sufficient validation. This can lead to a client-side global buffer overflow, resulting in a denial of service DoS due to a crash. For this vulnerability t...

freerdp: FreeRDP heap-buffer-overflow

A heap based buffer overflow has been discovered in FreeRDP. Prior to 3.20.1, a malicious RDP server can trigger a heap-buffer-overflow write in the FreeRDP client when processing Audio Input AUDIN format lists. audinprocessformats reuses callback-formatscount across multiple MSGSNDINFORMATS PDUs...

freerdp: FreeRDP has a heap-buffer-overflow in urb_select_interface

A heap buffer overflow has been discovered in FreeRDP. The URBDRC client uses server-supplied interface numbers as array indices without bounds checks, causing an out-of-bounds read in libusbudevselectinterface...

freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation

A use after free flaw was found in FreeRDP. AUDIN format renegotiation frees the active format list while the capture thread continues using audin-format, leading to a use after free in audioformatcompatible. A malicious server can trigger a client‑side heap use after free causing a crash...