Fallos del tipo CWE-787
5145 resultadosEscrita 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-2023-27217CRITICALA stack-based buffer overflow in the ChangeFriendlyName() function of Belkin Smart Outlet V2 F7c063 firmware_2.00.11420.OWRT.PVT_SNSV2 allowEPSS 1.0%CVE-2024-20018CRITICALIn wlan driver, there is a possible out of bounds write due to improper input validation. This could lead to local escalation of privilege wEPSS 1.0%CVE-2024-54508MEDIUMThe issue was addressed with improved memory handling. This issue is fixed in Safari 18.2, iOS 18.2 and iPadOS 18.2, iPadOS 17.7.6, macOS SeEPSS 1.0%CVE-2023-1820HIGHHeap buffer overflow in Browser History in Google Chrome prior to 112.0.5615.49 allowed a remote attacker who convinced a user to engage in EPSS 1.0%CVE-2024-5499HIGHOut of bounds write in Streams API in Google Chrome prior to 125.0.6422.141 allowed a remote attacker to execute arbitrary code inside a sanEPSS 1.0%CVE-2026-70296CRITICALWindows Imaging Component Remote Code Execution VulnerabilityEPSS 1.0%CVE-2026-69819CRITICALRPC Runtime Library Remote Code Execution VulnerabilityEPSS 1.0%CVE-2023-29531CRITICALAn attacker could have caused an out of bounds memory access using WebGL APIs, leading to memory corruption and a potentially exploitable crEPSS 1.0%CVE-2022-43106CRITICALTenda AC23 V16.03.07.45_cn was discovered to contain a stack overflow via the schedStartTime parameter in the setSchedWifi function.EPSS 1.0%CVE-2022-43103CRITICALTenda AC23 V16.03.07.45_cn was discovered to contain a stack overflow via the list parameter in the formSetQosBand function.EPSS 1.0%CVE-2022-43108CRITICALTenda AC23 V16.03.07.45_cn was discovered to contain a stack overflow via the firewallEn parameter in the formSetFirewallCfg function.EPSS 1.0%CVE-2022-43107CRITICALTenda AC23 V16.03.07.45_cn was discovered to contain a stack overflow via the time parameter in the setSmartPowerManagement function.EPSS 1.0%CVE-2022-43104CRITICALTenda AC23 V16.03.07.45_cn was discovered to contain a stack overflow via the wpapsk_crypto parameter in the fromSetWirelessRepeat function.EPSS 1.0%CVE-2022-43102CRITICALTenda AC23 V16.03.07.45_cn was discovered to contain a stack overflow via the timeZone parameter in the fromSetSysTime function.EPSS 1.0%CVE-2022-43105CRITICALTenda AC23 V16.03.07.45_cn was discovered to contain a stack overflow via the shareSpeed parameter in the fromSetWifiGusetBasic function.EPSS 1.0%CVE-2022-43101CRITICALTenda AC23 V16.03.07.45_cn was discovered to contain a stack overflow via the devName parameter in the formSetDeviceName function.EPSS 1.0%CVE-2025-26508HIGHCertain HP LaserJet Pro, HP LaserJet Enterprise, HP LaserJet Managed Printers – Potential Remote Code Execution and Potential Elevation of PrivilegeEPSS 1.0%CVE-2023-28445CRITICALDeno improperly handles resizable ArrayBufferEPSS 1.0%CVE-2021-33002—Opening a maliciously crafted project file may cause an out-of-bounds write, which may allow an attacker to execute arbitrary code. User intEPSS 1.0%CVE-2023-40163CRITICALAn out-of-bounds write vulnerability exists in the allocate_buffer_for_jpeg_decoding functionality of Accusoft ImageGear 20.1. A specially cEPSS 1.0%