Fallos del tipo CWE-787

5862 resultados

Escrita fora dos limites de memória

Ocorre quando um programa escreve dados em uma posição de memória fora do intervalo alocado para um buffer, array ou estrutura. O atacante aproveita para sobrescrever dados adjacentes (variáveis, ponteiros, pilha de retorno), alterando o comportamento da aplicação ou assumindo controle total do sistema.

Ejemplo

Um programa lê 256 bytes de entrada do usuário e copia para um buffer de 64 bytes sem validação. O atacante envia 300 bytes, que transbordam o buffer e sobrescrevem o endereço de retorno na pilha, permitindo execução de código arbitrário.

Cómo mitigar

Sempre validar tamanho de entrada contra o limite do buffer antes de copiar (usar strncpy, snprintf em vez de strcpy, sprintf). Em linguagens modernas, usar estruturas bounds-checked (Rust, C# arrays) ou linters que detectem padrões perigosos.

CVE-2026-16692MEDIUMIBM i is Affected By Multiple Vulnerabilities in Simple Mail Transfer ProtocolEPSS 0.5%CVE-2026-62349HIGHTDengine: Off-by-One Buffer OverflowEPSS 0.5%CVE-2026-20464MEDIUMIn hevc decoder, there is a possible out of bounds write due to an integer overflow. This could lead to remote escalation of privilege if a EPSS 0.5%CVE-2026-44254MEDIUMWazuh: Stack Out-of-Bounds Write in remoted Decompression PathEPSS 0.5%CVE-2026-64835HIGHFFmpeg 4.4 - 8.1.2 Out-of-Bounds Memory Access in ADX Audio DecoderEPSS 0.5%CVE-2026-58049HIGHFFmpeg - Out-of-Bounds Write in RASC Decoder decode_dlta()EPSS 0.5%CVE-2026-112614MEDIUMAn out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7.2 and iPadOS 26.7.2, iOS 27.2 and EPSS 0.5%CVE-2021-46763HIGHInsufficient input validation in the SMU may enable a privileged attacker to write beyond the intended bounds of a shared memory buffer poteEPSS 0.5%CVE-2026-53413HIGHZoom Clients - Buffer Over-writeEPSS 0.5%CVE-2022-1785HIGHOut-of-bounds Write in vim/vimEPSS 0.5%CVE-2023-20524HIGHAn attacker with a compromised ASP could possibly send malformed commands to an ASP on another CPU, resulting in an out of bounds write, potEPSS 0.5%CVE-2026-12292HIGHIncorrect boundary conditions in the Web Audio componentEPSS 0.5%CVE-2023-20954CRITICALIn SDP_AddAttribute of sdp_db.cc, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote code eEPSS 0.5%CVE-2023-20951CRITICALIn gatt_process_prep_write_rsp of gatt_cl.cc, there is a possible out of bounds write due to a missing bounds check. This could lead to remoEPSS 0.5%CVE-2026-73194CRITICALDBI versions before 1.652 for Perl allow a heap out-of-bounds write via an unvalidated numeric placeholder that sets the binder counter in preparseEPSS 0.5%CVE-2026-44436HIGHQuicly is vulnerable to connection state corruptionEPSS 0.5%CVE-2025-29029CRITICALTenda AC6 v15.03.05.16 was discovered to contain a buffer overflow via the formSetSpeedWan function.EPSS 0.5%CVE-2025-29030CRITICALTenda AC6 v15.03.05.16 was discovered to contain a buffer overflow via the formWifiWpsOOB function.EPSS 0.5%CVE-2025-29031CRITICALTenda AC6 v15.03.05.16 was discovered to contain a buffer overflow via the fromAddressNat function.EPSS 0.5%CVE-2025-25372HIGHNASA cFS (Core Flight System) Aquila is vulnerable to segmentation fault via sending a malicious telecommand to the Memory Management ModuleEPSS 0.5%