Falhas do tipo CWE-119

3.506 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-2025-4255MEDIUMPCMan FTP Server RMD Command buffer overflowEPSS 2.2%CVE-2021-1300CRITICALCisco SD-WAN Buffer Overflow VulnerabilitiesEPSS 2.2%CVE-2026-7248CRITICALD-Link DI-8100 CGI Endpoint tgfile.htm tgfile_htm buffer overflowEPSS 2.2%CVE-2021-1479HIGHCisco SD-WAN vManage Software VulnerabilitiesEPSS 2.1%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-2022-32934HIGHThe issue was addressed with improved memory handling. This issue is fixed in macOS Big Sur 11.7, macOS Ventura 13, macOS Monterey 12.6. A rEPSS 2.1%CVE-2025-2621CRITICALD-Link DAP-1620 storage check_dws_cookie stack-based overflowEPSS 2.1%CVE-2021-1301CRITICALCisco SD-WAN Buffer Overflow VulnerabilitiesEPSS 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-2021-20204CRITICALA heap memory corruption problem (use after free) can be triggered in libgetdata v0.10.0 when processing maliciously crafted dirfile databasEPSS 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-2022-29465HIGHAn out-of-bounds write vulnerability exists in the PSD Header processing memory allocation functionality of Accusoft ImageGear 20.0. A speciEPSS 2.1%CVE-2025-2619CRITICALD-Link DAP-1620 Cookie storage check_dws_cookie stack-based overflowEPSS 2.1%CVE-2025-2618CRITICALD-Link DAP-1620 Path api set_ws_action heap-based overflowEPSS 2.1%CVE-2020-13571CRITICALAn out-of-bounds write vulnerability exists in the SGI RLE decompression functionality of Accusoft ImageGear 19.8. A specially crafted malfoEPSS 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%CVE-2020-15158HIGHHeap buffer overflow in libIEC61850EPSS 2.0%CVE-2022-3550MEDIUMX.org Server xkb.c _GetCountedString buffer overflowEPSS 2.0%CVE-2025-7911HIGHD-Link DI-8100 jhttpd upnp_ctrl.asp sprintf stack-based overflowEPSS 2.0%CVE-2020-3283HIGHCisco Firepower 1000 Series SSL/TLS Denial of Service VulnerabilityEPSS 2.0%