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Vulnerabilidades publicadas, com severidade, exploração conhecida e fontes oficiais.
CVE-2026-35199
Média · 6.1
CWE-122 06/04/2026
SymCrypt SymCryptXmssSign function - Heap overflow via 64->32-bit leaf-count truncation
SymCrypt is the core cryptographic function library currently used by Windows. From 103.5.0 to before 103.11.0, The SymCryptXmssSign function passes a 64-bit leaf count value to a helper function that accepts a 32-bit parameter. For XMSS^MT parameter sets with total tree height >= 32 (which includes standard predefined parameters), this causes silent truncation to zero, resulting in a drastically undersized scratch buffer allocation followed by a heap buffer overflow during signature computation. Exploiting this issue would require an application using SymCrypt to perform an XMSS^MT signature using an attacker-controlled parameter set. It is uncommon for applications to allow the use of attacker-controlled parameter sets for signing, since signing is a private key operation, and private keys must be trusted by definition. Additionally, XMSS(^MT) signing should only be performed in a Hardware Security Module (HSM). XMSS(^MT) signing is provided in SymCrypt only for testing purposes. This is a general rule irrespective of this CVE; XMSS(^MT) and other stateful signature schemes are only cryptographically secure when it is guaranteed that the same state cannot be reused for two different signatures, which cannot be guaranteed by software alone. For this reason, XMSS(^MT) signing is also not FIPS approved when performed outside of an HSM. Fixed in version 103.11.0.
CVE-2026-21372
Alta · 7.8
CWE-122 06/04/2026
Heap-Based Buffer Overflow in Power Management IC
Memory Corruption when sending IOCTL requests with invalid buffer sizes during memcpy operations.
CVE-2026-34979
Média · 5.3
CWE-122 03/04/2026
OpenPrinting CUPS: Heap overflow in `get_options()`
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building filter option strings from job attribute. At time of publication, there are no publicly available patches.
CVE-2026-34743
Média · 5.3
CWE-122 02/04/2026
XZ Utils: Buffer overflow in lzma_index_append()
XZ Utils provide a general-purpose data-compression library plus command-line tools. Prior to version 5.8.3, if lzma_index_decoder() was used to decode an Index that contained no Records, the resulting lzma_index was left in a state where where a subsequent lzma_index_append() would allocate too little memory, and a buffer overflow would occur. This issue has been patched in version 5.8.3.
CVE-2026-34120
Média · 6.5
CWE-122 02/04/2026
Heap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in TP-Link Tapo C520WS
A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within the asynchronous parsing of local video stream content due to
insufficient alignment and validation of buffer boundaries when processing streaming inputs.An attacker
on the same network segment could trigger heap memory corruption conditions by
sending crafted payloads that cause write operations beyond allocated buffer
boundaries. Successful exploitation
causes a Denial-of-Service (DoS) condition, causing the device’s process to
crash or become unresponsive.
CVE-2026-34119
Média · 6.5
CWE-122 02/04/2026
Heap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in TP-Link Tapo C520WS
A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within the HTTP parsing
loop
when appending segmented request bodies without
continuous write‑boundary verification, due to insufficient boundary validation when handling externally supplied HTTP input. An attacker
on the same network segment could trigger heap memory corruption conditions by
sending crafted payloads that cause write operations beyond allocated buffer
boundaries. Successful exploitation
causes a Denial-of-Service (DoS) condition, causing the device’s process to
crash or become unresponsive.
CVE-2026-34118
Média · 6.5
CWE-122 02/04/2026
Heap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in TP-Link Tapo C100, C101 & C520WS
A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C100/C101 v5, C210 v3.6 and C520WS v2.6 in the HTTP POST body parsing logic due to missing validation of remaining buffer capacity after dynamic allocation, due to insufficient boundary validation when handling externally supplied HTTP input.
An attacker
on the same network segment could trigger heap memory corruption conditions by
sending crafted payloads that cause write operations beyond allocated buffer
boundaries. Successful exploitation
causes a Denial-of-Service (DoS) condition, causing the device’s process to
crash or become unresponsive.
CVE-2026-34545
Alta · 7.3
CWE-122 01/04/2026
OpenEXR: integer overflow lead to OOB in HTJ2K decoder
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.7, an attacker providing a crafted .exr file with HTJ2K compression and a channel width of 32768 can write controlled data beyond the output heap buffer in any application that decodes EXR images. The write primitive is 2 bytes per overflow iteration or 4 bytes (by another path), repeating for each additional pixel past the overflow point. In this context, a heap write overflow can lead to remote code execution on systems. This issue has been patched in version 3.4.7.
CVE-2026-5275
Alta · 8.8
CWE-122 01/04/2026
Heap buffer overflow in ANGLE in Google Chrome on Mac prior to 146.0.7680.178 allowed a remote...
Heap buffer overflow in ANGLE in Google Chrome on Mac prior to 146.0.7680.178 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)
CVE-2026-5272
Alta · 8.8
CWE-122 01/04/2026
Heap buffer overflow in GPU in Google Chrome prior to 146.0.7680.178 allowed a remote attacker to...
Heap buffer overflow in GPU in Google Chrome prior to 146.0.7680.178 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)
CVE-2026-34540
Média · 5.5
CWE-122 31/03/2026
iccDEV: HBO in icMemDump()
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to version 2.3.1.6, a crafted ICC profile can trigger a heap-buffer-overflow (HBO) in icMemDump() when iccDumpProfile attempts to dump/describe malformed tag contents. The issue is observable under AddressSanitizer as an out-of-bounds heap read in icMemDump(...) at IccProfLib/IccUtil.cpp:1002, reachable via CIccTagUnknown::Describe(). This issue has been patched in version 2.3.1.6.
CVE-2026-34539
Média · 5.5
CWE-122 31/03/2026
iccDEV: HBO in CTiffImg::WriteLine()
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to version 2.3.1.6, a crafted ICC profile and TIFF input can trigger a heap-buffer-overflow (HBO) in CTiffImg::WriteLine(). The issue is observable under AddressSanitizer as an out-of-bounds heap read when running iccSpecSepToTiff on a malicious .icc + .tif pair, leading to a crash during TIFF strip writing. This issue has been patched in version 2.3.1.6.
CVE-2026-34535
Média · 5.5
CWE-122 31/03/2026
iccDEV: SEGV in CIccTagArray::Cleanup()
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to version 2.3.1.6, a crafted ICC profile can trigger a segmentation fault (SEGV) in CIccTagArray::Cleanup(). The issue is observable under UBSan/ASan as misaligned member access / misaligned pointer loads followed by an invalid read leading to process crash when running iccRoundTrip on a malicious profile. This issue has been patched in version 2.3.1.6.
CVE-2026-34534
Média · 5.5
CWE-122 31/03/2026
iccDEV: HBO in CIccMpeSpectralMatrix::Describe()
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to version 2.3.1.6, a crafted ICC profile can trigger a heap-buffer-overflow (HBO) in CIccMpeSpectralMatrix::Describe(). The issue is observable under AddressSanitizer as an out-of-bounds heap read when running iccDumpProfile on a malicious profile. This issue has been patched in version 2.3.1.6.
CVE-2026-5201
Alta · 7.5
CWE-122 31/03/2026
Gdk-pixbuf: gdk-pixbuf: denial of service via heap-based buffer overflow when processing a specially crafted jpeg image
A flaw was found in the gdk-pixbuf library. This heap-based buffer overflow vulnerability occurs in the JPEG image loader due to improper validation of color component counts when processing a specially crafted JPEG image. A remote attacker can exploit this flaw without user interaction, for example, via thumbnail generation. Successful exploitation leads to application crashes and denial of service (DoS) conditions.
CVE-2026-33987
Média · 6.6
CWE-122 30/03/2026
FreeRDP: Persistent Cache bmpSize Desync - Heap OOB Write
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in persistent_cache_read_entry_v3() in libfreerdp/cache/persistent.c, persistent->bmpSize is updated before winpr_aligned_recalloc(). If realloc fails, bmpSize is inflated while bmpData points to the old buffer. This issue has been patched in version 3.24.2.
CVE-2026-33986
Alta · 7.5
CWE-122 30/03/2026
FreeRDP: H.264 YUV Buffer Dimension Desync - Heap OOB Write
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in yuv_ensure_buffer() in libfreerdp/codec/h264.c, h264->width and h264->height are updated before the reallocation loop. If any winpr_aligned_recalloc() call fails, the function returns FALSE but width/height are already inflated. This issue has been patched in version 3.24.2.
CVE-2026-33984
Alta · 7.5
CWE-122 30/03/2026
FreeRDP: ClearCodec resize_vbar_entry() Heap OOB Write
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in resize_vbar_entry() in libfreerdp/codec/clear.c, vBarEntry->size is updated to vBarEntry->count before the winpr_aligned_recalloc() call. If realloc fails, size is inflated while pixels still points to the old, smaller buffer. On a subsequent call where count <= size (the inflated value), realloc is skipped. The caller then writes count * bpp bytes of attacker-controlled pixel data into the undersized buffer, causing a heap buffer overflow. This issue has been patched in version 3.24.2.
CVE-2026-28842
Alta · 7.5
CWE-122 24/03/2026
Heap-based Buffer Overflow em Apple Macos
The issue was addressed with improved bounds checks. This issue is fixed in macOS Tahoe 26.4. A buffer overflow may result in memory corruption and unexpected app termination.
CVE-2026-27654
Alta · 8.2
CWE-122 24/03/2026
NGINX ngx_http_dav_module vulnerability
NGINX Open Source and NGINX Plus have a vulnerability in the ngx_http_dav_module module that might allow an attacker to trigger a buffer overflow to the NGINX worker process; this vulnerability may result in termination of the NGINX worker process or modification of source or destination file names outside the document root. This issue affects NGINX Open Source and NGINX Plus when the configuration file uses DAV module MOVE or COPY methods, prefix location (nonregular expression location configuration), and alias directives. The integrity impact is constrained because the NGINX worker process user has low privileges and does not have access to the entire system. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
CVE-2026-33298
Alta · 7.8
CWE-122 23/03/2026
llama.cpp has a Heap Buffer Overflow via Integer Overflow in GGUF Tensor Parsing
llama.cpp is an inference of several LLM models in C/C++. Prior to b7824, an integer overflow vulnerability in the `ggml_nbytes` function allows an attacker to bypass memory validation by crafting a GGUF file with specific tensor dimensions. This causes `ggml_nbytes` to return a significantly smaller size than required (e.g., 4MB instead of Exabytes), leading to a heap-based buffer overflow when the application subsequently processes the tensor. This vulnerability allows potential Remote Code Execution (RCE) via memory corruption. b7824 contains a fix.
CVE-2026-32710
Crítica · 9.9
CWE-122 20/03/2026
Estouro de buffer baseado em heap no MariaDB
MariaDB server é um fork de código aberto e desenvolvimento comunitário do MySQL server. Um usuário autenticado pode derrubar versões do MariaDB 11.4 anteriores à 11.4.10 e 11.8 anteriores à 11.8.6 por meio de um erro na função JSON_SCHEMA_VALID(). Em determinadas condições, pode ser possível transformar a falha em execução remota de código. Essas condições exigem controle rigoroso do layout de memória, o que geralmente só é possível em ambiente de laboratório. Este problema está corrigido no MariaDB 11.4.10, no MariaDB 11.8.6 e no MariaDB 12.2.2.
CVE-2026-32945
Crítica · 9.8
CWE-122 20/03/2026
PJSIP: estouro de buffer baseado em heap no analisador DNS
PJSIP é uma biblioteca de comunicação multimídia gratuita e de código aberto escrita em C. As versões 2.16 e anteriores possuem uma vulnerabilidade de estouro de buffer baseado em heap no handler de tamanho de nome do analisador DNS. Isso afeta aplicações que usam o resolvedor DNS embutido do PJSIP, como as configuradas com pjsua_config.nameserver ou UaConfig.nameserver em PJSUA/PJSUA2. Não afeta usuários que dependem do resolvedor do sistema operacional (por exemplo, getaddrinfo()) por não configurarem um nameserver, nem aqueles que usam um resolvedor externo via pjsip_resolver_set_ext_resolver(). Este problema está corrigido na versão 2.17. Para usuários que não podem atualizar, uma alternativa é desativar a resolução DNS na configuração do PJSIP (definindo nameserver_count como zero) ou usar uma implementação de resolvedor externo.
CVE-2026-4463
Alta · 8.8
CWE-122 19/03/2026
Heap-based Buffer Overflow em Google Chrome
Heap buffer overflow in WebRTC in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
CVE-2026-4455
Alta · 8.8
CWE-122 19/03/2026
Heap-based Buffer Overflow em Google Chrome
Heap buffer overflow in PDFium in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted PDF file. (Chromium security severity: High)