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CVE-2026-54896 Baixa · 2.1 CWE-122 30/06/2026
Oj: Heap Buffer Overflow in Oj.dump Exception Serialization via Large Indent
Oj (Optimized JSON) is a JSON parser and Object marshaller packaged as a Ruby gem. In versions prior to 3.17.2, when in object mode, Oj.dump is vulnerable to a heap buffer overflow when serializing Exception objects with a large :indent value. The serializer allocates a buffer sized for the object's attributes but does not account for the indent bytes added on each write. With indent: 5000, the accumulation of 5,000-byte indent strings overflows the 13,150-byte heap allocation, corrupting adjacent heap memory. This issue has been fixed in version 3.17.2.
CVE-2026-54696 Baixa · 3.7 CWE-122 30/06/2026
Ruby JSON: JSON generator heap buffer overflow when streaming to an IO
Ruby JSON is a JSON implementation for Ruby. Versions 2.9.0 through 2.19.8 are vulnerable to heap buffer overflow when the JSON generator is provided with an oversized streamed object. When streaming to an IO JSON.dump(obj, io) and JSON::State#generate(obj, io) can write past the internal JSON generator buffer when a streamed object contains an attacker-controlled string near 16 KB. Exploitation would result in a reliable process crash/denial of service. This issue has been fixed in version 2.19.9.
CVE-2026-13976 Média · 5.8 CWE-122 30/06/2026
Insufficient data validation in Storage in Google Chrome prior to 150.0.7871.47 allowed a remote...
Insufficient data validation in Storage in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)
CVE-2026-13884 Alta · 8.8 CWE-122 30/06/2026
Integer overflow in Chromecast in Google Chrome prior to 150.0.7871.47 allowed a local attacker...
Integer overflow in Chromecast in Google Chrome prior to 150.0.7871.47 allowed a local attacker to execute arbitrary code via malicious network traffic. (Chromium security severity: Medium)
CVE-2026-13835 Alta · 8.8 CWE-122 30/06/2026
Inappropriate implementation in XML in Google Chrome prior to 150.0.7871.47 allowed a remote...
Inappropriate implementation in XML in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
CVE-2026-13798 Crítica · 9.6 CWE-122 30/06/2026
Estouro de buffer na heap no Chromecast do Google Chrome (CWE-122)
Estouro de buffer na heap em Chromecast no Google Chrome anterior à versão 150.0.7871.47 permitiu que um atacante remoto que tivesse comprometido o processo renderer executasse potencialmente uma fuga do sandbox por meio de uma página HTML elaborada. (Gravidade de segurança do Chromium: Alta)
CVE-2026-51219 Alta · 7.5 CWE-122 29/06/2026
A heap buffer overflow in the HighPriorityASDUQueue_hasUnconfirmedIMessages function of…
A heap buffer overflow in the HighPriorityASDUQueue_hasUnconfirmedIMessages function of lib60870 v2.3.3 to v2.3.6 allows attackers to cause a Denial of Service (DoS) via a crafted payload.
CVE-2026-51218 Alta · 7.5 CWE-122 29/06/2026
A heap buffer overflow in the TS7Worker::PerformFunctionWrite() function…
A heap buffer overflow in the TS7Worker::PerformFunctionWrite() function (/core/s7_server.cpp) of snap7 v1.4.3 allows attackers to cause a Denial of Service (DoS) via a crafted packet.
CVE-2026-12912 Alta · 7.3 CWE-122 29/06/2026
Libtiff: libtiff: heap-based buffer overflow via crafted pixarlog-compressed tiff image
A flaw was found in libtiff. A remote attacker could exploit this vulnerability by providing a specially crafted PixarLog-compressed TIFF image. This issue occurs when decoding Pixarlog codec images with the PIXARLOGDATAFMT_8BITABGR output format and a specific stride value, leading to a heap-based buffer overflow. This could potentially result in arbitrary code execution or a denial of service (DoS).
CVE-2026-30040 Média · 6.5 CWE-122 26/06/2026
A heap overflow in the FSViewer.exe process of FastStone Image Viewer v8.3 allows…
A heap overflow in the FSViewer.exe process of FastStone Image Viewer v8.3 allows attackers to cause a execute arbitrary code in the context of the current process via supplying a crafted JPEG 2000 (JP2) file.
CVE-2026-56789 Média · 6.5 CWE-122 25/06/2026
RTKLIB 2.4.3 - Heap Buffer Overflow and Stack Read via Oversized RINEX Epoch Satellite Count
RTKLIB through 2.4.3 contains a heap buffer overflow vulnerability in the readrnxobsb function in src/rinex.c that allows attackers to trigger memory corruption by failing to clamp satellite count values from RINEX epoch headers. Attackers can craft malicious RINEX files declaring more than 64 satellites per epoch to cause heap buffer overflow writes and out-of-bounds stack reads, crashing RTKLIB-based applications including rnx2rtkp and RTKPOST.
CVE-2026-56123 Crítica · 9.8 CWE-122 25/06/2026
Estouro de buffer baseado em heap no analisador de respostas DOMAINNAME do socat via SOCKS5
As versões do socat 1.8.0.0 até 1.8.1.1 contêm uma vulnerabilidade de estouro de buffer baseado em heap que permite que um servidor proxy SOCKS5 malicioso sobrescreva memória heap adjacente, explorando uma falha de extensão de sinal no analisador da resposta DOMAINNAME. Durante a configuração da conexão, o byte de comprimento do nome de domínio é lido por meio de um campo char com sinal, causando um valor negativo em bytes_to_read que é convertido implicitamente para size_t, resultando em uma escrita de heap ilimitada no buffer de resposta de 262 bytes, com tamanho e conteúdo controlados pelo atacante.
CVE-2026-12844 Alta · 7.5 CWE-122 25/06/2026
List::SomeUtils::XS versions before 0.59 for Perl have a heap buffer overflow in the pairwise function
List::SomeUtils::XS versions before 0.59 for Perl have a heap buffer overflow in the pairwise function. pairwise() collects the values returned by the block into a heap buffer sized to the longer input array, then grows the buffer before each copy with a single quadrupling (alloc <<= 2) instead of a loop. A block call that returns more than four times the current allocation in one invocation outgrows that one quadrupling, and the copy writes past the end of the buffer. Any caller of pairwise() whose block returns, for a single pair, more than four times the longer input array's length writes past the buffer and corrupts the heap.
CVE-2026-46752 Crítica · 10.0 CWE-122 25/06/2026
Apache Kvrocks: estouro de heap na biblioteca cjson do Lua
Estouro de heap (HEAP overflow) no Lua do Redis, na biblioteca cjson, vulnerabilidade no Apache Kvrocks. Esta questão afeta Apache Kvrocks: de 2.0.4 até 2.15.0. Recomenda-se que os usuários façam upgrade para a versão 2.16.0, que corrige o problema.
CVE-2026-12244 Alta · 8.8 CWE-122 25/06/2026
Heap overflow and crash with crafted SVCB RR
If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with an rdata size of 65512, that let's an (uint16_t) variable that is used to allocate space needed for the RR wrap (because total size > 65535), causing a heap overflow. The attacker can perform a controlled (RCE class) head write of up to 65509 bytes
CVE-2026-2050 Alta · 7.8 CWE-122 24/06/2026
GIMP HDR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
GIMP HDR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of HDR files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28266.
CVE-2025-60468 Média · 5.5 CWE-122 24/06/2026
Heap-based Buffer Overflow em Gpac
GPAC Multimedia Open Source Project GPAC Project/MP4Box 2.5-DEV-rev1593-gfe88c3545-master is affected by: Buffer Overflow. The impact is: cause a denial of service (local). The component is: filter_core/filter_pid.c (L:574-580): function gf_filter_pid_inst_swap_delete_task() improperly accesses freed objects during PID instance swap/delete cleanup, leading to heap use-after-free. The attack vector is: Local (AV:L): a local, authenticated user who processes a specially crafted MPEG-2 TS/MP4 file with MP4Box can trigger the bug during filter teardown (PID instance swap/delete), causing a crash. ¶¶ In GPAC s MP4Box, gf_filter_pid_inst_swap_delete_task() in filter_core/filter_pid.c may dereference objects after they have been freed when cleaning up PID instances after a swap/delete operation. Crafted inputs (e.g., malformed MPEG-2 TS) can trigger a heap use-after-free and crash; exploitation may be possible.
CVE-2026-12725 Média · 5.9 CWE-122 22/06/2026
Dnsmasq: dnsmasq: heap buffer overflow in log_query() when logging unsupported ds/dnskey replies
A heap-based buffer overflow was found in dnsmasq. When DNSSEC validation and query logging are both enabled, logging of DS or DNSKEY replies containing unsupported algorithm or digest types can cause dnsmasq to write past the end of an internal logging buffer. A remote attacker able to supply such a DNS response may crash the dnsmasq process, resulting in denial of service.
CVE-2026-56208 Alta · 7.6 CWE-122 19/06/2026
Libaom: libaom: heap buffer overflow in av1 encoder first-pass stats buffer via lap mode
A heap buffer overflow vulnerability was found in libaom, the reference AV1 codec implementation. A flaw in the AV1 encoder's Look-Ahead Processing (LAP) mode causes the first-pass stats ring buffer wrap-around guard to be bypassed when g_lag_in_frames is set to 1 or higher. This results in a 232-byte out-of-bounds write on every encoded frame after the second, corrupting adjacent heap objects. An attacker who can influence encoder configuration in a transcoding service or WebRTC session could exploit this to cause a denial of service (process crash) or potentially achieve code execution.
CVE-2026-3195 Alta · 7.4 CWE-122 19/06/2026
Qemu-kvm: virtio-snd: heap buffer overflow in virtio_snd_pcm_in_cb (incomplete fix for cve-2024-7730)
A flaw was found in QEMU. When reading input audio in the virtio-snd device input callback, the `virtio_snd_pcm_in_cb` function did not check whether the iov could fit the data buffer, potentially leading to a heap out-of-bounds write. This issue exists due to an incomplete fix for CVE-2024-7730.
CVE-2026-45696 Média · 6.5 CWE-122 18/06/2026
OpenEXR HTJ2K decoder heap buffer over-read in ht_undo_impl() (DoS)
OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions 3.4.0 through 3.4.11, the HTJ2K (High-Throughput JPEG 2000) decoder, ht_undo_impl() in OpenEXRCore is vulnerable to a heap-buffer-overflow READ. The ht_undo_imp function copies decoded pixels out of a per-line OpenJPH buffer using the EXR channel's declared width as the iteration count. The codestream embedded in the EXR chunk can declare different (smaller) tile/line dimensions than the EXR header advertises, but ht_undo_impl() does not validate this — it pulls width 32-bit samples from cur_line->i32[] without checking the OpenJPH line buffer's actual length. A crafted EXR file produces a 4-byte heap-buffer-overflow READ immediately after a buffer allocated by ojph::local::codestream::finalize_alloc(). The bug is reachable through the standard scanline-decode entry point used by every consumer of exr_decoding_run/Imf::checkOpenEXRFile, including thumbnailers, asset pipelines, and the exrcheck utility — i.e. any application that opens untrusted EXR files. The result is a deterministic crash (DoS) and potential adjacent-heap leak. This issue has been fixed in version 3.4.12.
CVE-2026-2467 Alta · 8.1 CWE-122 17/06/2026
Heap-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Variables and Tags.
Heap-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Variables and Tags. This issue affects Connext Professional: from 7.4.0 before 7.7.0, from 7.0.0 before 7.3.1.3, from 6.1.0 before 6.1.*, from 6.0.0 before 6.0.*, from 5.3.0 before 5.3.*, from 5.2.0 before 5.2.*, from 5.0.0 before 5.1.*.
CVE-2026-12466 Alta · 8.8 CWE-122 17/06/2026
Heap buffer overflow in WebRTC in Google Chrome on Windows prior to 149.0.7827.155 allowed a...
Heap buffer overflow in WebRTC in Google Chrome on Windows prior to 149.0.7827.155 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)
CVE-2026-12447 Alta · 8.8 CWE-122 17/06/2026
Heap buffer overflow in WebRTC in Google Chrome prior to 149.0.7827.155 allowed a remote attacker...
Heap buffer overflow in WebRTC in Google Chrome prior to 149.0.7827.155 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
CVE-2026-47747 Alta · 7.8 CWE-122 16/06/2026
stable-diffusion.cpp has a Heap-based Buffer Overflow
stable-diffusion.cpp is a pure C/C++ library for running diffusion model (Stable Diffusion, Flux, Wan, Qwen Image, Z-Image, and more) inference. In versions prior to master-584-0a7ae07, the pickle .ckpt parser in src/model.cpp contained a heap buffer overflow vulnerability in the BINUNICODE opcode handler. The issue was caused by sign confusion on the opcode length field. A crafted .ckpt file could trigger memcpy with a very large length derived from a negative signed value, causing immediate heap corruption. The issue has been resolved in version master-584-0a7ae07. If developers are unable to immediately update their applications they can work around this issue by only loading .ckpt checkpoint files from trusted sources and preferring trusted model sources and safer formats such as .safetensors where possible.