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CVE-2026-63209

Integer Overflow or Wraparound and Out-of-bounds Write in compress

compress provides various compression algorithms. Prior to version 1.18.7, a signed integer overflow vulnerability in s2.NewDict() allows an attacker to bypass repeat index validation by supplying a dictionary with a uvarint-encoded repeat value exceeding MaxInt64. When Dict.Encode() is subsequently called, the overflowed negative repeat value causes an out-of-bounds memory access via unsafe.Pointer arithmetic, crashing the process with SIGSEGV. This issue has been patched in version 1.18.7.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Klauspost
Products
Compress
CVE-2026-47540

nvidia-driver: nvidia-driver: Arbitrary code execution via integer underflow in the kernel mode layer

NVIDIA GPU Display Driver for Windows and Linux contains a vulnerability in the kernel mode layer where an attacker could cause an integer underflow. A successful exploit of this vulnerability might lead to code execution, denial of service, escalation of privileges, information disclosure, and data tampering.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Nvidia
Products
Geforce Nvs Quadro and 3 more
CVE-2026-102621

Freedesktop Poppler SplashClip.cc clipToPath integer overflow

A vulnerability was identified in Freedesktop Poppler up to 26.08.0. Affected is the function SplashClip::clipToPath of the file splash/SplashClip.cc. Such manipulation leads to integer overflow. The attack can only be performed from a local environment. The exploit is publicly available and might be used. Upgrading to version 26.09.0 is able to address this issue. The name of the patch is 323c91036d99926a8b90dc14329f7b40aece22f8. It is recommended to upgrade the affected component.

CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed
Vendors
Freedesktop
Products
Poppler
CVE-2026-103222

Blosc C-Blosc2 blosclz Decompression blosclz.c blosclz_decompress integer overflow

A vulnerability was determined in Blosc C-Blosc2 up to 3.3.2. This impacts the function blosclz_decompress of the file blosc/blosclz.c of the component blosclz Decompression. Executing a manipulation can lead to integer overflow. The attack may be launched remotely. A high complexity level is associated with this attack. The exploitability is said to be difficult. Upgrading to version 3.3.3 will fix this issue. This patch is called fe2964d114d97847f56570a0ab2be2c57ccbeedc. The affected component should be upgraded.

CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed
Vendors
Blosc
Products
C-blosc2
CVE-2026-46655

virtio-win: Integer overflow causing a heap overflow in Viosock driver

virtio-win provides Windows paravirtualized drivers for QEMU and KVM. From mm210 until mm320, the Viosock driver permits a low-privilege local process to submit an IOCTL_SELECT request with attacker-controlled VIRTIO_VSOCK_SELECT.Fdss[*].fd_count values that overflow the 32-bit sum used by VIOSockSelect for bounds checking. The wrapped sum can pass the FD_SETSIZE check even though an individual descriptor count is much larger than the expected limit. VIOSockSelectCopyFds then iterates using the unchecked count and writes beyond the allocated pPkt->Fds array in the NonPagedPool kernel heap. Successful exploitation can corrupt kernel memory and enable privilege escalation in a Windows guest running the driver. This issue is fixed in mm320.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Virtio-win
Products
Kvm-guest-drivers-windows
CVE-2026-74221

U-Boot before 2026.10-rc5 Buffer Overflow via NFS READLINK

U-Boot before 2026.10-rc5 contains a buffer overflow in nfs_readlink_reply() function in net/nfs-common.c when processing NFS server responses. A malicious NFS server can send crafted READLINK replies with negative or oversized symlink length values to corrupt memory and crash the bootloader.

CVSS 4.0 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Denx U-boot
Products
U-boot U-boot
CVE-2026-102510

Apache PLC4X: Go binding: unbounded allocation and framing failures on wire-controlled lengths

Integer Overflow, Improper Validation of Array Index, Uncontrolled Recursion and Memory Allocation with Excessive Size Value in the Go implementation of Apache PLC4X (PLC4Go) allow a malicious device, or an attacker able to inject network traffic, to crash or exhaust the memory of the client application, causing a denial of service. The individual defects are: - Generated parsers pre-allocate arrays with the element count claimed on the wire (0.13.0 through 0.13.1). - Transport read helpers allocate buffers of the size claimed on the wire without an upper bound. - ADS and KNXnet/IP response handling indexes into received data without checking its length, causing a panic. - ADS and EIP frame-length handling accepts, or arithmetically wraps to, a length of zero, breaking message framing. - Recursive protocol types are parsed without a nesting-depth limit. The same defect in the Java implementation is covered by CVE-2026-102509 https://cveprocess.apache.org/cve5/CVE-2026-102509 . Additionally, length and position arithmetic in generated serializers was performed in 16-bit integers. If an application forwards attacker-influenced payloads larger than 8 KB, the length field wraps, and the remainder of the payload may be interpreted by the receiving device (for example, an ADS PLC) as additional, independent protocol messages. This issue affects Apache PLC4X: from 0.11.0 before 1.0.0. PLC4Go is consumed as the Go module github.com/apache/plc4x/plc4go; versions refer to the corresponding Apache PLC4X releases. Users are recommended to upgrade to version 1.0.0, which fixes the issue.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
—
Products
—
CVE-2026-74220

U-Boot before 2026.10-rc5 Buffer Overflow via NFS READ Reply

U-Boot before 2026.10-rc5 contains a buffer overflow in nfs_read_reply() function in net/nfs-common.c that allows attackers to corrupt memory by supplying crafted NFS READ reply lengths. A malicious NFS server can exploit signed integer handling to bypass length validation and write far past the destination buffer, crashing the bootloader or corrupting memory.

CVSS 4.0 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Denx
Products
U-boot
CVE-2026-65969

OpenImageIO: TGA-to-GIF palette split signed overflow causes SIGSEGV

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A truncated tga can leave a pending gif frame that is processed during output close. gifsplitpalette() computes numpixels multiplied by the palette partition width in signed 32-bit arithmetic; a large image overflows that intermediate, corrupts subpixelsa, and drives an out-of-bounds read while building the gif palette, resulting in a process crash and denial of service. The affected implementation is identified by src/gif.imageio/gif.h, GifSplitPalette(), numPixels, subPixelsA, GIFOutput, and truncated TGA input, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Academysoftwarefoundation Openimageio
Products
Openimageio Openimageio
CVE-2026-17504

This Power System update is being released to address

IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 is affected by a vulnerability in the partition firmware runtime. An attacker with root access to a partition can send a specially crafted request to the partition firmware runtime, causing it to crash with possible memory corruption.

CVSS 3.1 · 5.1 Medium EPSS < 1% KEV · Not listed
Vendors
Ibm
Products
Power System E1050 \(9043-mrx\) Power System E1050 \(9043-mrx\) Firmware Power System E1080 \(9080-hex\) and 50 more
CVE-2026-74765

Net::IDN::Punycode versions before 2.590 for Perl allow an out-of-bounds read via integer overflow of the delta accumulator in encode_punycode

Net::IDN::Punycode versions before 2.590 for Perl allow an out-of-bounds read via integer overflow of the delta accumulator in encode_punycode. The XS backend keeps the punycode delta, and the digit index derived from it, in a signed int. The accumulation `delta += (m-n) * (h+1)` has no overflow check, so a large enough code point wraps the delta and the digit index leaves the range of the 36-entry digit table. The bound before the final table access tests only for an index above 36, so a negative index passes it, as does 36 itself. Perl strings hold code points beyond the Unicode range, and one such code point overflows the accumulation on its own. Valid input wraps it as well, for example 1927 ASCII letters followed by U+10FFFF. The conversion functions encode a label before they check its length, so a long label reaches the encoder through the documented API. Only the XS backend is affected. Encoding an attacker-supplied string copies a byte from outside the digit table into the encoded result or crashes the process.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Perl
Products
Net::idn::punycode
CVE-2026-101279

Trusted Domain Project OpenDMARC opendmarc_policy.c integer overflow

A security vulnerability has been detected in Trusted Domain Project OpenDMARC up to 1.4.2. This impacts an unknown function of the file libopendmarc/opendmarc_policy.c of the component DMARC Parser. The manipulation of the argument pct leads to integer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Vendors
Trusted Domain Project
Products
Opendmarc
CVE-2026-88377

Integer Underflow in Bento4 AVCC/HVCc Parsing Causes Denial of Service

Bento4 1.6.0.0 contains an integer underflow vulnerability in the avcC and hvcC configuration atom parsers. A specially crafted MP4 file containing an atom with a declared size smaller than AP4_ATOM_HEADER_SIZE can cause AP4_AvccAtom::Create() or AP4_HvccAtom::Create() to underflow the payload-size calculation. The resulting oversized buffer operation can cause invalid or NULL pointers to be passed to the AP4_DataBuffer copy path, resulting in application termination and denial of service.

CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed
Vendors
Axiomatic
Products
Bento4
CVE-2026-88365

Integer Overflow in minimp3 mp3dec_skip_id3v1 During APEv2 Tag Parsing

minimp3 commit ea99364f contains an integer overflow vulnerability in mp3dec_skip_id3v1() when parsing the APEv2 tag-size field.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Lieff
Products
Minimp3