CVE-2026-25772

Wazuh Database Synchronization Vulnerable to Stack-based Buffer Overflow via snprintf Integer Underflow

Wazuh is a free and open source platform used for threat prevention, detection, and response. Starting in version 4.4.0 and prior to version 4.14.3, a stack-based buffer overflow vulnerability exists in the Wazuh Database synchronization module (`wdb_delta_event.c`). The SQL query construction logic allows for an integer underflow when calculating the remaining buffer size. This occurs because the code incorrectly aggregates the return value of `snprintf`. If a specific database synchronization payload exceeds the size of the query buffer (2048 bytes), the size calculation wraps around to a massive integer, effectively removing bounds checking for subsequent writes. This allows an attacker to corrupt the stack, leading to a Denial of Service (DoS) or potentially RCE. Version 4.14.3 fixes the issue.

CVSS 3.1 · 4.9 Medium EPSS < 1% KEV · Not listed

Vendors

Wazuh

Products

Wazuh

CVE-2026-29078

Integer Underflow in Lexbor ISO‑2022‑JP Encoder

Lexbor is a web browser engine library. Prior to 2.7.0, the ISO‑2022‑JP encoder in Lexbor fails to reset the temporary size variable between iterations. The statement ctx->buffer_used -= size with a stale size = 3 causes an integer underflow that wraps to SIZE_MAX. Afterwards, memcpy is called with a negative length, leading to an out‑of‑bounds read from the stack and an out‑of‑bounds write to the heap. The source data is partially controllable via the contents of the DOM tree. This vulnerability is fixed in 2.7.0.

CVSS 4.0 · 8.2 High EPSS < 1% KEV · Not listed

Vendors

Lexbor

Products

Lexbor

CVE-2026-29776

FreeRDP has an Integer Underflow in update_read_cache_bitmap_order Function of FreeRDP's Core Library

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, Integer Underflow in update_read_cache_bitmap_order Function of FreeRDP's Core Library This vulnerability is fixed in 3.24.0.

CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed

Vendors

Freerdp

Products

Freerdp

CVE-2026-31883

FreeRDP has a `size_t` underflow in ADPCM decoder leads to heap-buffer-overflow write

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a size_t underflow in the IMA-ADPCM and MS-ADPCM audio decoders leads to heap-buffer-overflow write via the RDPSND audio channel. In libfreerdp/codec/dsp.c, the IMA-ADPCM and MS-ADPCM decoders subtract block header sizes from a size_t variable without checking for underflow. When nBlockAlign (received from the server) is set such that size % block_size == 0 triggers the header parsing at a point where size is smaller than the header (4 or 8 bytes), the subtraction wraps size to ~SIZE_MAX. The while (size > 0) loop then continues for an astronomical number of iterations. This vulnerability is fixed in 3.24.0.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Freerdp

Products

Freerdp

CVE-2026-28520

arduino-TuyaOpen WiFiMulti Single-Byte Buffer Overflow Remote Code Execution

arduino-TuyaOpen before version 1.2.1 contains a single-byte buffer overflow vulnerability in the WiFiMulti component. When the victim's smart hardware connects to an attacker-controlled AP hotspot, the attacker can exploit the overflow to execute arbitrary code on the affected embedded device.

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

Vendors

Tuya

Products

Arduino-tuyaopen

CVE-2026-31814

Yamux remote Panic via malformed WindowUpdate credit

Yamux is a stream multiplexer over reliable, ordered connections such as TCP/IP. From 0.13.0 to before 0.13.9, a specially crafted WindowUpdate can cause arithmetic overflow in send-window accounting, which triggers a panic in the connection state machine. This is remotely reachable over a normal network connection and does not require authentication. This vulnerability is fixed in 0.13.9.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Libp2p Protocol

Products

Rust-yamux Yamux

CVE-2026-3084

GStreamer H.266 Codec Parser Integer Underflow Remote Code Execution Vulnerability

GStreamer H.266 Codec Parser Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the parsing of picture partitions. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28910.

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

Vendors

Gstreamer

Products

Gstreamer

CVE-2026-32239

Cap'n Proto has an integer overflow in KJ-HTTP

Cap'n Proto is a data interchange format and capability-based RPC system. Prior to 1.4.0, a negative Content-Length value was converted to unsigned, treating it as an impossibly large length instead. In theory, this bug could enable HTTP request/response smuggling. This vulnerability is fixed in 1.4.0.

CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed

Vendors

Capnproto

Products

Capnproto

CVE-2026-32240

Cap'n Proto: Integer overflow in KJ-HTTP chunk size

Cap'n Proto is a data interchange format and capability-based RPC system. Prior to 1.4.0, when using Transfer-Encoding: chunked, if a chunk's size parsed to a value of 2^64 or larger, it would be truncated to a 64-bit integer. In theory, this bug could enable HTTP request/response smuggling. This vulnerability is fixed in 1.4.0.

CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed

Vendors

Capnproto

Products

Capnproto

CVE-2023-53570

wifi: nl80211: fix integer overflow in nl80211_parse_mbssid_elems()

In the Linux kernel, the following vulnerability has been resolved: wifi: nl80211: fix integer overflow in nl80211_parse_mbssid_elems() nl80211_parse_mbssid_elems() uses a u8 variable num_elems to count the number of MBSSID elements in the nested netlink attribute attrs, which can lead to an integer overflow if a user of the nl80211 interface specifies 256 or more elements in the corresponding attribute in userspace. The integer overflow can lead to a heap buffer overflow as num_elems determines the size of the trailing array in elems, and this array is thereafter written to for each element in attrs. Note that this vulnerability only affects devices with the wiphy->mbssid_max_interfaces member set for the wireless physical device struct in the device driver, and can only be triggered by a process with CAP_NET_ADMIN capabilities. Fix this by checking for a maximum of 255 elements in attrs.

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

Vendors

Linux

Products

Linux Kernel

CVE-2023-38103

GStreamer RealMedia File Parsing Integer Overflow Remote Code Execution Vulnerability

GStreamer RealMedia File Parsing Integer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the parsing of MDPR chunks. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-21443.

CVSS 3.1 · 8.8 High EPSS 1.5% KEV · Not listed

Vendors

Gstreamer

Products

Gstreamer

CVE-2024-47546

GHSL-2024-243: GStreamer has an integer underflow in extract_cc_from_data leading to OOB-read

GStreamer is a library for constructing graphs of media-handling components. An integer underflow has been detected in extract_cc_from_data function within qtdemux.c. In the FOURCC_c708 case, the subtraction atom_length - 8 may result in an underflow if atom_length is less than 8. When that subtraction underflows, *cclen ends up being a large number, and then cclen is passed to g_memdup2 leading to an out-of-bounds (OOB) read. This vulnerability is fixed in 1.24.10.

CVSS 4.0 · 6.9 Medium EPSS 1.1% KEV · Not listed

Vendors

Gstreamer Redhat

Products

Gstreamer Enterprise Linux

CVE-2024-47545

GHSL-2024-242: GStreamer has an integer underflow in FOURCC_strf parsing leading to OOB-read

GStreamer is a library for constructing graphs of media-handling components. An integer underflow has been detected in qtdemux_parse_trak function within qtdemux.c. During the strf parsing case, the subtraction size -= 40 can lead to a negative integer overflow if it is less than 40. If this happens, the subsequent call to gst_buffer_fill will invoke memcpy with a large tocopy size, resulting in an OOB-read. This vulnerability is fixed in 1.24.10.

CVSS 4.0 · 6.9 Medium EPSS 1.1% KEV · Not listed

Vendors

Gstreamer Redhat

Products

Gstreamer Enterprise Linux

CVE-2024-47537

GHSL-2024-094: GStreamer has an OOB-write in isomp4/qtdemux.c

GStreamer is a library for constructing graphs of media-handling components. The program attempts to reallocate the memory pointed to by stream->samples to accommodate stream->n_samples + samples_count elements of type QtDemuxSample. The problem is that samples_count is read from the input file. And if this value is big enough, this can lead to an integer overflow during the addition. As a consequence, g_try_renew might allocate memory for a significantly smaller number of elements than intended. Following this, the program iterates through samples_count elements and attempts to write samples_count number of elements, potentially exceeding the actual allocated memory size and causing an OOB-write. This vulnerability is fixed in 1.24.10.

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

Vendors

Gstreamer Redhat

Products

Gstreamer Enterprise Linux Rhel Aus and 4 more

CVE-2024-4453

GStreamer EXIF Metadata Parsing Integer Overflow Remote Code Execution Vulnerability

GStreamer EXIF Metadata Parsing Integer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the parsing of EXIF metadata. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. . Was ZDI-CAN-23896.

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

Vendors

Debian Gstreamer Redhat

Products

Debian Linux Gstreamer Enterprise Linux

CVE-2023-38104

GStreamer RealMedia File Parsing Integer Overflow Remote Code Execution Vulnerability

GStreamer RealMedia File Parsing Integer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the parsing of MDPR chunks. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-21444.

CVSS 3.1 · 8.8 High EPSS 1.4% KEV · Not listed

Vendors

Gstreamer

Products

Gstreamer

CVE-2023-37327

GStreamer FLAC File Parsing Integer Overflow Remote Code Execution Vulnerability

GStreamer FLAC File Parsing Integer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the parsing of FLAC audio files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-20775.

CVSS 3.1 · 8.8 High EPSS 1.7% KEV · Not listed

Vendors

Gstreamer Redhat

Products

Gstreamer Enterprise Linux

CVE-2022-2122

gstreamer-plugins-good: Potential heap overwrite in mp4 demuxing using zlib decompression

DOS / potential heap overwrite in qtdemux using zlib decompression. Integer overflow in qtdemux element in qtdemux_inflate function which causes a segfault, or could cause a heap overwrite, depending on libc and OS. Depending on the libc used, and the underlying OS capabilities, it could be just a segfault or a heap overwrite.

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

Vendors

Debian Gstreamer Redhat

Products

Debian Linux Gstreamer Enterprise Linux

CVE-2016-9445

gstreamer-plugins-bad-free: Integer overflow when allocating render buffer in VMnc decoder

Integer overflow in the vmnc decoder in the gstreamer allows remote attackers to cause a denial of service (crash) via large width and height values, which triggers a buffer overflow.

CVSS 3.1 · 7.5 High EPSS 4.8% KEV · Not listed

Vendors

Gstreamer Redhat

Products

Gstreamer Enterprise Linux

CVE-2023-40475

GStreamer MXF File Parsing Integer Overflow Remote Code Execution Vulnerability

GStreamer MXF File Parsing Integer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the parsing of MXF video files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. . Was ZDI-CAN-21661.

CVSS 3.1 · 8.8 High EPSS 2.1% KEV · Not listed

Vendors

Gstreamer Redhat

Products

Gstreamer Enterprise Linux