Vulnerabilities (CVE)

Filtered by vendor Redhat Subscribe
Total 6095 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2021-4217 3 Fedoraproject, Redhat, Unzip Project 3 Fedora, Enterprise Linux, Unzip 2026-06-17 N/A 3.3 LOW
A flaw was found in unzip. The vulnerability occurs due to improper handling of Unicode strings, which can lead to a null pointer dereference. This flaw allows an attacker to input a specially crafted zip file, leading to a crash or code execution.
CVE-2021-4213 3 Debian, Dogtagpki, Redhat 3 Debian Linux, Network Security Services For Java, Enterprise Linux 2026-06-17 N/A 7.5 HIGH
A flaw was found in JSS, where it did not properly free up all memory. Over time, the wasted memory builds up in the server memory, saturating the server’s RAM. This flaw allows an attacker to force the invocation of an out-of-memory process, causing a denial of service.
CVE-2021-4209 3 Gnu, Netapp, Redhat 6 Gnutls, Active Iq Unified Manager, Hci Bootstrap Os and 3 more 2026-06-17 N/A 6.5 MEDIUM
A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.
CVE-2021-4207 3 Debian, Qemu, Redhat 3 Debian Linux, Qemu, Enterprise Linux 2026-06-17 4.6 MEDIUM 8.2 HIGH
A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values `cursor->header.width` and `cursor->header.height` can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.
CVE-2021-4206 3 Debian, Qemu, Redhat 3 Debian Linux, Qemu, Enterprise Linux 2026-06-17 4.6 MEDIUM 8.2 HIGH
A flaw was found in the QXL display device emulation in QEMU. An integer overflow in the cursor_alloc() function can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. This flaw allows a malicious privileged guest user to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.
CVE-2021-4204 4 Debian, Linux, Netapp and 1 more 13 Debian Linux, Linux Kernel, H300s and 10 more 2026-06-17 N/A 7.1 HIGH
An out-of-bounds (OOB) memory access flaw was found in the Linux kernel's eBPF due to an Improper Input Validation. This flaw allows a local attacker with a special privilege to crash the system or leak internal information.
CVE-2021-4189 4 Debian, Netapp, Python and 1 more 5 Debian Linux, Ontap Select Deploy Administration Utility, Python and 2 more 2026-06-17 N/A 5.3 MEDIUM
A flaw was found in Python, specifically in the FTP (File Transfer Protocol) client library in PASV (passive) mode. The issue is how the FTP client trusts the host from the PASV response by default. This flaw allows an attacker to set up a malicious FTP server that can trick FTP clients into connecting back to a given IP address and port. This vulnerability could lead to FTP client scanning ports, which otherwise would not have been possible.
CVE-2021-4180 2 Openstack, Redhat 2 Tripleo Heat Templates, Openstack 2026-06-17 4.0 MEDIUM 4.3 MEDIUM
An information exposure flaw in openstack-tripleo-heat-templates allows an external user to discover the internal IP or hostname. An attacker could exploit this by checking the www_authenticate_uri parameter (which is visible to all end users) in configuration files. This would give sensitive information which may aid in additional system exploitation. This flaw affects openstack-tripleo-heat-templates versions prior to 11.6.1.
CVE-2021-4178 1 Redhat 9 A-mq Streams, Build Of Quarkus, Descision Manager and 6 more 2026-06-17 N/A 6.7 MEDIUM
A arbitrary code execution flaw was found in the Fabric 8 Kubernetes client affecting versions 5.0.0-beta-1 and above. Due to an improperly configured YAML parsing, this will allow a local and privileged attacker to supply malicious YAML.
CVE-2021-4166 7 Apple, Debian, Fedoraproject and 4 more 8 Mac Os X, Macos, Debian Linux and 5 more 2026-06-17 5.8 MEDIUM 7.1 HIGH
vim is vulnerable to Out-of-bounds Read
CVE-2021-4159 3 Debian, Linux, Redhat 3 Debian Linux, Linux Kernel, Enterprise Linux 2026-06-17 N/A 4.4 MEDIUM
A vulnerability was found in the Linux kernel's EBPF verifier when handling internal data structures. Internal memory locations could be returned to userspace. A local attacker with the permissions to insert eBPF code to the kernel can use this to leak internal kernel memory details defeating some of the exploit mitigations in place for the kernel.
CVE-2021-4158 2 Qemu, Redhat 2 Qemu, Enterprise Linux 2026-06-17 N/A 6.0 MEDIUM
A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.
CVE-2021-4154 3 Linux, Netapp, Redhat 4 Linux Kernel, Hci Baseboard Management Controller, Enterprise Linux and 1 more 2026-06-17 7.2 HIGH 8.8 HIGH
A use-after-free flaw was found in cgroup1_parse_param in kernel/cgroup/cgroup-v1.c in the Linux kernel's cgroup v1 parser. A local attacker with a user privilege could cause a privilege escalation by exploiting the fsconfig syscall parameter leading to a container breakout and a denial of service on the system.
CVE-2021-4147 3 Fedoraproject, Netapp, Redhat 3 Fedora, Ontap Select Deploy Administration Utility, Libvirt 2026-06-17 4.9 MEDIUM 6.5 MEDIUM
A flaw was found in the libvirt libxl driver. A malicious guest could continuously reboot itself and cause libvirtd on the host to deadlock or crash, resulting in a denial of service condition.
CVE-2021-4145 2 Qemu, Redhat 2 Qemu, Enterprise Linux 2026-06-17 4.9 MEDIUM 6.5 MEDIUM
A NULL pointer dereference issue was found in the block mirror layer of QEMU in versions prior to 6.2.0. The `self` pointer is dereferenced in mirror_wait_on_conflicts() without ensuring that it's not NULL. A malicious unprivileged user within the guest could use this flaw to crash the QEMU process on the host when writing data reaches the threshold of mirroring node.
CVE-2021-4133 1 Redhat 1 Keycloak 2026-06-17 6.5 MEDIUM 8.8 HIGH
A flaw was found in Keycloak in versions from 12.0.0 and before 15.1.1 which allows an attacker with any existing user account to create new default user accounts via the administrative REST API even when new user registration is disabled.
CVE-2021-4125 1 Redhat 1 Openshift 2026-06-17 N/A 8.1 HIGH
It was found that the original fix for log4j CVE-2021-44228 and CVE-2021-45046 in the OpenShift metering hive containers was incomplete, as not all JndiLookup.class files were removed. This CVE only applies to the OpenShift Metering hive container images, shipped in OpenShift 4.8, 4.7 and 4.6.
CVE-2021-4115 6 Canonical, Debian, Fedoraproject and 3 more 6 Ubuntu Linux, Debian Linux, Fedora and 3 more 2026-06-17 2.1 LOW 5.5 MEDIUM
There is a flaw in polkit which can allow an unprivileged user to cause polkit to crash, due to process file descriptor exhaustion. The highest threat from this vulnerability is to availability. NOTE: Polkit process outage duration is tied to the failing process being reaped and a new one being spawned
CVE-2021-4112 1 Redhat 5 Ansible Automation Platform, Ansible Automation Platform Early Access, Ansible Automation Platform Text-only Advisories and 2 more 2026-06-17 N/A 8.8 HIGH
A flaw was found in ansible-tower where the default installation is vulnerable to job isolation escape. This flaw allows an attacker to elevate the privilege from a low privileged user to an AWX user from outside the isolated environment.
CVE-2021-4104 4 Apache, Fedoraproject, Oracle and 1 more 46 Log4j, Fedora, Advanced Supply Chain Planning and 43 more 2026-06-17 6.0 MEDIUM 7.5 HIGH
JMSAppender in Log4j 1.2 is vulnerable to deserialization of untrusted data when the attacker has write access to the Log4j configuration. The attacker can provide TopicBindingName and TopicConnectionFactoryBindingName configurations causing JMSAppender to perform JNDI requests that result in remote code execution in a similar fashion to CVE-2021-44228. Note this issue only affects Log4j 1.2 when specifically configured to use JMSAppender, which is not the default. Apache Log4j 1.2 reached end of life in August 2015. Users should upgrade to Log4j 2 as it addresses numerous other issues from the previous versions.