Falhas do tipo CWE-119

3.263 resultados

Corrupção de Memória Genérica

É uma categoria abrangente que descreve qualquer acesso indevido à memória — escrever fora dos limites de um buffer, ler dados não inicializados, ou manipular ponteiros inválidos. O risco é grave: permite execução de código arbitrário, travamento da aplicação ou exposição de dados sensíveis.

Exemplo

Um programa em C copia dados do usuário para um array sem validar o tamanho (strcpy em vez de strncpy). Um atacante envia uma string maior que o buffer, sobrescrevendo dados adjacentes ou até o endereço de retorno da função, permitindo injetar código malicioso.

Como mitigar

Use funções seguras (strncpy, snprintf, memmove com limites explícitos), valide e sanitize toda entrada antes de copiar, ative canários de pilha e ASLR no SO, e aplique sanitizadores (ASAN, UBSAN) durante desenvolvimento e testes. Em linguagens seguras (Rust, Python) o problema é praticamente eliminado.

CVE-2017-9633HIGHAn Improper Restriction of Operations within the Bounds of a Memory Buffer issue was discovered in the Continental AG Infineon S-Gold 2 (PMBEPSS 2.2%CVE-2023-3036HIGHOut of Bounds Slice index in cfnts leads to remote panicEPSS 2.2%CVE-2025-4348HIGHD-Link DIR-600L formSetWanL2TP buffer overflowEPSS 2.2%CVE-2019-5105HIGHAn exploitable memory corruption vulnerability exists in the Name Service Client functionality of 3S-Smart Software Solutions CODESYS GatewaEPSS 2.2%CVE-2019-17320—NetSarang XFTP Client 6.0149 and earlier version contains a buffer overflow vulnerability caused by improper boundary checks when copying fiEPSS 2.2%CVE-2020-3451MEDIUMCisco Small Business RV340 Series Routers Command Injection and Remote Code Execution VulnerabilitiesEPSS 2.2%CVE-2021-20204CRITICALA heap memory corruption problem (use after free) can be triggered in libgetdata v0.10.0 when processing maliciously crafted dirfile databasEPSS 2.2%CVE-2026-7248CRITICALD-Link DI-8100 CGI Endpoint tgfile.htm tgfile_htm buffer overflowEPSS 2.2%CVE-2025-4347HIGHD-Link DIR-600L formWlSiteSurvey buffer overflowEPSS 2.2%CVE-2017-6633—A vulnerability in the TCP throttling process of Cisco UCS C-Series Rack Servers 3.0(0.234) could allow an unauthenticated, remote attacker EPSS 2.1%CVE-2021-1300CRITICALCisco SD-WAN Buffer Overflow VulnerabilitiesEPSS 2.1%CVE-2021-34874HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.1%CVE-2020-13520HIGHAn out of bounds memory corruption vulnerability exists in the way Pixar OpenUSD 20.05 reconstructs paths from binary USD files. A speciallyEPSS 2.1%CVE-2021-1301CRITICALCisco SD-WAN Buffer Overflow VulnerabilitiesEPSS 2.1%CVE-2025-2621CRITICALD-Link DAP-1620 storage check_dws_cookie stack-based overflowEPSS 2.1%CVE-2020-27874HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Tencent WeChat 7.0.18. User interaction isEPSS 2.1%CVE-2019-11925—Insufficient boundary checks when processing the JPEG APP12 block marker in the GD extension could allow access to out-of-bounds memory via EPSS 2.1%CVE-2022-26776CRITICALThis issue was addressed with improved checks. This issue is fixed in macOS Monterey 12.4, macOS Big Sur 11.6.6. An attacker may be able to EPSS 2.1%CVE-2022-29465HIGHAn out-of-bounds write vulnerability exists in the PSD Header processing memory allocation functionality of Accusoft ImageGear 20.0. A speciEPSS 2.0%CVE-2017-9639—An issue was discovered in Fuji Electric V-Server Version 3.3.22.0 and prior. A memory corruption vulnerability has been identified (aka impEPSS 2.0%