Falhas do tipo CWE-119

3.511 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-2025-13551HIGHD-Link DIR-822K/DWR-M920 formWanConfigSetup buffer overflowEPSS 0.8%CVE-2025-3266MEDIUMqinguoyi TinyWebServer http_conn.cpp stack-based overflowEPSS 0.8%CVE-2024-27851HIGHThe issue was addressed with improved bounds checks. This issue is fixed in Safari 17.5, iOS 17.5 and iPadOS 17.5, macOS Sonoma 14.5, tvOS 1EPSS 0.8%CVE-2026-79847CRITICALUnauthenticated Buffer Overflow Vulnerabilities leads to Remote Code Execution in AOS-10EPSS 0.8%CVE-2025-11387HIGHTenda AC15 fast_setting_pppoe_set stack-based overflowEPSS 0.8%CVE-2021-43313—A heap-based buffer overflow was discovered in upx, during the variable 'bucket' points to an inaccessible address. The issue is being triggEPSS 0.8%CVE-2021-43315—A heap-based buffer overflows was discovered in upx, during the generic pointer 'p' points to an inaccessible address in func get_le32(). ThEPSS 0.8%CVE-2021-43314—A heap-based buffer overflows was discovered in upx, during the generic pointer 'p' points to an inaccessible address in func get_le32(). ThEPSS 0.8%CVE-2025-11356HIGHTenda AC23 SetStaticRouteCfg sscanf buffer overflowEPSS 0.8%CVE-2021-43317—A heap-based buffer overflows was discovered in upx, during the generic pointer 'p' points to an inaccessible address in func get_le32(). ThEPSS 0.8%CVE-2025-11325HIGHTenda AC18 fast_setting_pppoe_set stack-based overflowEPSS 0.8%CVE-2025-11117HIGHTenda CH22 GstDhcpSetSer formWrlExtraGet buffer overflowEPSS 0.8%CVE-2021-43312—A heap-based buffer overflow was discovered in upx, during the variable 'bucket' points to an inaccessible address. The issue is being triggEPSS 0.8%CVE-2025-11527HIGHTenda AC7 fast_setting_pppoe_set stack-based overflowEPSS 0.8%CVE-2025-10803HIGHTenda AC23 HTTP POST Request SetPptpServerCfg sscanf buffer overflowEPSS 0.8%CVE-2021-43311—A heap-based buffer overflow was discovered in upx, during the generic pointer 'p' points to an inaccessible address in func get_le32(). TheEPSS 0.8%CVE-2024-27879HIGHThe issue was addressed with improved bounds checks. This issue is fixed in iOS 17.7 and iPadOS 17.7, iOS 18 and iPadOS 18. An attacker may EPSS 0.8%CVE-2025-11389HIGHTenda AC15 saveAutoQos stack-based overflowEPSS 0.8%CVE-2025-11528HIGHTenda AC7 saveAutoQos stack-based overflowEPSS 0.8%CVE-2021-43316—A heap-based buffer overflow was discovered in upx, during the generic pointer 'p' points to an inaccessible address in func get_le64().EPSS 0.8%