Falhas do tipo CWE-121

3.836 resultados

Estouro de buffer na pilha

Ocorre quando código escreve mais dados em um buffer alocado na pilha do que sua capacidade permite, sobrescrevendo dados adjacentes (variáveis, endereços de retorno). Um atacante pode explorar isso para executar código arbitrário ou crashar a aplicação alterando o fluxo de execução.

Exemplo

Uma função C que copia uma string do usuário diretamente em um array local sem validar tamanho: `char buffer[10]; strcpy(buffer, user_input);`. Se user_input tiver 50 caracteres, os 40 extras sobrescrevem a pilha, incluindo potencialmente o endereço de retorno da função.

Como mitigar

Use funções seguras que limitam escrita (strncpy, snprintf em vez de strcpy/sprintf), valide tamanho de entrada antes de copiar, ative proteções do compilador (stack canaries, ASLR) e use ferramentas de análise estática para detectar cópias sem limite.

CVE-2025-34123HIGHVideoCharge Studio 2.12.3.685 SEH Buffer Overflow via .VSC FileEPSS 0.5%CVE-2023-32971LOWQTS, QuTS hero, QuTScloudEPSS 0.5%CVE-2023-32972LOWQTS, QuTS hero, QuTScloudEPSS 0.5%CVE-2026-22262MEDIUMSuricata datasets: stack overflow when saving a setEPSS 0.5%CVE-2023-41278MEDIUMQTS, QuTS hero, QuTScloudEPSS 0.5%CVE-2023-32973LOWQTS, QuTS hero, QuTScloudEPSS 0.5%CVE-2023-41277MEDIUMQTS, QuTS hero, QuTScloudEPSS 0.5%CVE-2025-15008MEDIUMTenda WH450 HTTP Request L7Port stack-based overflowEPSS 0.5%CVE-2025-66047CRITICALSeveral stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.1. A speciaEPSS 0.5%CVE-2025-66044CRITICALSeveral stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.1. A speciaEPSS 0.5%CVE-2026-51105HIGHBuffer Overflow vulnerability in aMULE-Project aMule v.2.3.3 allows a remote attacker to cause a denial of service via the OP_SERVERMESSAGE EPSS 0.5%CVE-2025-66045CRITICALSeveral stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.1. A speciaEPSS 0.5%CVE-2025-66046CRITICALSeveral stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.1. A speciaEPSS 0.5%CVE-2023-27498HIGHMemory Corruption vulnerability in SAP Host Agent (SAPOSCOL)EPSS 0.5%CVE-2025-65804MEDIUMTenda AX3 v16.03.12.11 contains a stack overflow in formSetIptv via the iptvType parameter, which can cause memory corruption and enable remEPSS 0.5%CVE-2020-37000HIGHFree MP3 CD Ripper 2.8 - Stack Buffer Overflow (SEH + Egghunter)EPSS 0.5%CVE-2020-36961HIGH10-Strike Network Inventory Explorer 8.65 - Buffer Overflow (SEH)EPSS 0.5%CVE-2026-78010HIGHFireware OS Stack-Based Buffer Overflow in iked Allows Unauthenticated Denial of ServiceEPSS 0.5%CVE-2017-9647—A Stack-Based Buffer Overflow issue was discovered in the Continental AG Infineon S-Gold 2 (PMB 8876) chipset on BMW several models producedEPSS 0.5%CVE-2026-82478MEDIUMNASA Trick TCP Socket JSONVariableServerThread.cpp parse_request stack-based overflowEPSS 0.5%