CVE-2026-101258

Ghostscript: ghostscript: -dsafer sandbox bypass via type 5 shading oob write and procedure-stream use-after-free

A flaw was found in Ghostscript. When Ghostscript renders a crafted PostScript or EPS document, it can bypass the -dSAFER sandbox and execute arbitrary shell commands in the context of the Ghostscript process. The issue chains memory corruption in document parsing with disabling of internal path access controls at runtime. An attacker can deliver the document directly or through formats that delegate rendering to Ghostscript (for example EPS import or print conversion workflows). Successful exploitation can compromise confidentiality, integrity, and availability of data accessible to the process running Ghostscript.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Ghostscript Redhat

Products

Ghostscript Enterprise Linux Rhel Els

CVE-2026-105958

Spice-server: spice: heap oob read/write via unchecked migration data offsets

A flaw was found in spice-server. Multiple migration data handlers use client-supplied offsets from SPICE_MSGC_MIGRATE_DATA messages without bounds validation, allowing a malicious authenticated SPICE client during VM live migration to read arbitrary heap memory or trigger heap corruption via out-of-bounds read and write operations on the message buffer.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Rhel Els

CVE-2025-26598

Xorg: xwayland: out-of-bounds write in createpointerbarrierclient()

An out-of-bounds write flaw was found in X.Org and Xwayland. The function GetBarrierDevice() searches for the pointer device based on its device ID and returns the matching value, or supposedly NULL, if no match was found. However, the code will return the last element of the list if no matching device ID is found, which can lead to out-of-bounds memory access.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Redhat Tigervnc X.org

Products

Enterprise Linux Rhel Aus Rhel E4s and 6 more

CVE-2025-26596

Xorg: xwayland: heap overflow in xkbwritekeysyms()

A heap overflow flaw was found in X.Org and Xwayland. The computation of the length in XkbSizeKeySyms() differs from what is written in XkbWriteKeySyms(), which may lead to a heap-based buffer overflow.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Redhat Tigervnc X.org

Products

Enterprise Linux Rhel Aus Rhel E4s and 6 more

CVE-2025-26595

Xorg: xwayland: buffer overflow in xkbvmodmasktext()

A buffer overflow flaw was found in X.Org and Xwayland. The code in XkbVModMaskText() allocates a fixed-sized buffer on the stack and copies the names of the virtual modifiers to that buffer. The code fails to check the bounds of the buffer and would copy the data regardless of the size.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Redhat Tigervnc X.org

Products

Enterprise Linux Rhel Aus Rhel E4s and 6 more

CVE-2025-0624

Grub2: net: out-of-bounds write in grub_net_search_config_file()

A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environment variable into an internal buffer using the grub_strcpy() function. During this step, it fails to consider the environment variable length when allocating the internal buffer, resulting in an out-of-bounds write. If correctly exploited, this issue may result in remote code execution through the same network segment grub is searching for the boot information, which can be used to by-pass secure boot protections.

CVSS 3.1 · 7.6 High EPSS 1.4% KEV · Not listed

Vendors

Redhat

Products

Enterprise Linux Openshift Rhel Aus and 4 more

CVE-2024-4467

Qemu-kvm: 'qemu-img info' leads to host file read/write

A flaw was found in the QEMU disk image utility (qemu-img) 'info' command. A specially crafted image file containing a `json:{}` value describing block devices in QMP could cause the qemu-img process on the host to consume large amounts of memory or CPU time, leading to denial of service or read/write to an existing external file.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Advanced Virtualization Container Native Virtualization Enterprise Linux and 5 more

CVE-2026-93866

Fireware OS Pre-Authentication Integer Overflow in Access Portal Allows Out-of-Bounds Write

An integer overflow vulnerability in the WebSocket connection handling used by WatchGuard Fireware OS's Access Portal allows a remote, unauthenticated attacker to write beyond the bounds of a heap buffer by sending a specially crafted request while the Access Portal feature is enabled.

CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Fireware Os

CVE-2026-90442

Fireware OS Authenticated Stack Buffer Overflow in certd Allows Denial of Service

A stack-based buffer overflow vulnerability in the Fireware OS certd process allows an authenticated attacker with access to the Firebox management interface to crash the certificate management service and potentially execute arbitrary code by sending a specially crafted request.

CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Fireware Os

CVE-2026-112709

Fireware OS Heap Buffer Overflow in AD Authentication Service Allows Pre-Authentication Remote Code Execution

A heap-based buffer overflow vulnerability in the Fireware OS authentication service allows an attacker who controls or intercepts traffic to the configured Active Directory server to create a denial of service condition and potentially execute arbitrary code by returning a specially crafted response.

CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Fireware Os

CVE-2026-109090

libXi XGetDeviceControl DEVICE_ENABLE Heap Buffer Overflow

A malicious X server could cause a heap overflow by injecting a large DEVICE_ENABLE reply when processed by libXi before 1.8.4.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

X.org

Products

Libxi

CVE-2026-109089

libXi XGetDeviceControl Control Type Mismatch Heap Buffer Overflow

A buffer overflow when handling DEVICE_RESOLUTION in libXi before 1.8.4 could overflow a heap, triggered by a malicious X server.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

X.org

Products

Libxi

CVE-2026-107590

Out-of-bounds write vulnerability in QTextCodec iconv-based encoding impacts Qt

An out-of-bounds write vulnerability in the Qt QTextCodec iconv-based encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) impacts Qt. Under certain conditions, encoding text with QTextCodec may write outside an internal buffer. This can cause the application to crash and may affect data integrity.

CVSS 4.0 · 1.9 Low EPSS < 1% KEV · Not listed

Vendors

Qt

Products

Qt Qt5compat Qtbase

CVE-2026-103594

Fireware OS Stack Buffer Overflow in WireGuard Configuration Allows Remote Code Execution

A stack-based buffer overflow vulnerability in Fireware OS's WireGuard configuration processing allows a remote attacker that has man-in-the-middle TLS-decrypted access between the Firebox and WatchGuard Cloud to create a Denial of Service condition and potentially execute arbitrary code by tampering with a FireCloud Gateway configuration payload.

CVSS 4.0 · 9.5 Critical EPSS < 1% KEV · Not listed

Vendors

Watchguard

Products

Fireware Os

CVE-2024-12084

Rsync: heap buffer overflow in rsync due to improper checksum length handling

A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. When MAX_DIGEST_LEN exceeds the fixed SUM_LENGTH (16 bytes), an attacker can write out of bounds in the sum2 buffer.

CVSS 3.1 · 9.8 Critical EPSS 72.5% KEV · Not listed

Vendors

Almalinux Archlinux Gentoo and 5 more

Products

Almalinux Arch Linux Linux and 7 more

CVE-2024-0646

Kernel: ktls overwrites readonly memory pages when using function splice with a ktls socket as destination

An out-of-bounds memory write flaw was found in the Linux kernel’s Transport Layer Security functionality in how a user calls a function splice with a ktls socket as the destination. This flaw allows a local user to crash or potentially escalate their privileges on the system.

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed

Vendors

Linux Redhat

Products

Linux Kernel Enterprise Linux Logging and 6 more

CVE-2024-0409

Xorg-x11-server: selinux context corruption

A flaw was found in the X.Org server. The cursor code in both Xephyr and Xwayland uses the wrong type of private at creation. It uses the cursor bits type with the cursor as private, and when initiating the cursor, that overwrites the XSELINUX context.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Fedoraproject Redhat Tigervnc and 1 more

Products

Fedora Enterprise Linux Enterprise Linux Desktop and 10 more

CVE-2024-0229

Xorg-x11-server: reattaching to different master device may lead to out-of-bounds memory access

An out-of-bounds memory access flaw was found in the X.Org server. This issue can be triggered when a device frozen by a sync grab is reattached to a different master device. This issue may lead to an application crash, local privilege escalation (if the server runs with extended privileges), or remote code execution in SSH X11 forwarding environments.

CVSS 3.1 · 7.8 High EPSS 1.2% KEV · Not listed

Vendors

Fedoraproject Redhat X.org

Products

Fedora Enterprise Linux Enterprise Linux Aus and 10 more

CVE-2023-6816

Xorg-x11-server: heap buffer overflow in devicefocusevent and procxiquerypointer

A flaw was found in X.Org server. Both DeviceFocusEvent and the XIQueryPointer reply contain a bit for each logical button currently down. Buttons can be arbitrarily mapped to any value up to 255, but the X.Org Server was only allocating space for the device's particular number of buttons, leading to a heap overflow if a bigger value was used.

CVSS 3.1 · 9.8 Critical EPSS 2.1% KEV · Not listed

Vendors

Debian Fedoraproject Redhat and 1 more

Products

Debian Linux Fedora Enterprise Linux and 10 more

CVE-2023-6377

Xorg-x11-server: out-of-bounds memory reads/writes in xkb button actions

A flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and writes. This may allow local privilege escalation or possible remote code execution in cases where X11 forwarding is involved.

CVSS 3.1 · 7.8 High EPSS 1.6% KEV · Not listed

Vendors

Debian Redhat Tigervnc and 1 more

Products

Debian Linux Enterprise Linux Enterprise Linux Eus and 8 more