Fallos del tipo CWE-119

3511 resultados

Corrupção de memória genérica

Fraqueza genérica que descreve quando software escreve dados fora dos limites esperados de um buffer ou estrutura de memória, sobrescrevendo dados adjacentes. Permite ao atacante corromper dados críticos, executar código arbitrário ou derrubar a aplicação.

Ejemplo

Um programa C que copia uma string do usuário para um array fixo sem validar comprimento: strcpy(buffer, user_input) em um buffer de 64 bytes, quando o input tem 200 caracteres. Os dados transbordados sobrescrevem variáveis, ponteiros ou endereços de retorno na pilha.

Cómo mitigar

Use funções seguras de cópia (strncpy, strlcpy, memcpy com tamanho validado), implemente validação de entrada e comprimento antes de qualquer operação de escrita em buffer, e ative proteções de compilador como stack canaries e ASLR. Em linguagens modernas (Rust, Go), o gerenciamento automático de memória elimina essa classe de bugs.

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%