Fallos del tipo CWE-121

3823 resultados

Estouro de buffer na pilha

Ocorre quando código escreve dados além dos limites de um buffer alocado na pilha (stack), sobrescrevendo informações críticas como endereços de retorno ou variáveis locais. Um atacante pode explorar isso para executar código arbitrário ou causar crash da aplicação.

Ejemplo

Uma função copia uma string de entrada diretamente em um array de 64 bytes sem validar o tamanho: `char buffer[64]; strcpy(buffer, user_input);` Se o usuário enviar uma string com 200 bytes, ela sobrescreverá o endereço de retorno e pode redirecionar a execução para código malicioso.

Cómo mitigar

Use funções seguras com limite de tamanho (`strncpy`, `snprintf`), valide e sanitize entradas antes de copiar, implemente proteções em tempo de execução (stack canaries, ASLR, DEP) e considere usar linguagens com verificação de limites automática quando possível.

CVE-2026-32203HIGH.NET and Visual Studio Denial of Service VulnerabilityEPSS 1.9%CVE-2023-36006HIGHMicrosoft WDAC OLE DB provider for SQL Server Remote Code Execution VulnerabilityEPSS 1.9%CVE-2025-23310CRITICALNVIDIA Triton Inference Server for Windows and Linux contains a vulnerability where an attacker could cause stack buffer overflow by specialEPSS 1.9%CVE-2021-32943—The affected product is vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute arbitrary code on the WEPSS 1.9%CVE-2021-38432CRITICALFATEK Automation Communication ServerEPSS 1.9%CVE-2023-49287HIGHBuffer overflow vulnerabilities in tinydirEPSS 1.9%CVE-2022-0629HIGHStack-based Buffer Overflow in vim/vimEPSS 1.9%CVE-2024-2896HIGHTenda AC7 WifiWpsStart formWifiWpsStart stack-based overflowEPSS 1.9%CVE-2024-2903HIGHTenda AC7 GetParentControlInfo stack-based overflowEPSS 1.8%CVE-2024-3011HIGHTenda FH1205 QuickIndex formQuickIndex stack-based overflowEPSS 1.8%CVE-2024-3012HIGHTenda FH1205 GetParentControlInfo stack-based overflowEPSS 1.8%CVE-2017-6035—A Stack-Based Buffer Overflow issue was discovered in Wecon Technologies LEVI Studio HMI Editor before 1.8.1. This vulnerability causes a buEPSS 1.8%CVE-2023-4744CRITICALTenda AC8 formSetDeviceName stack-based overflowEPSS 1.8%CVE-2020-25177—WECON PLC Editor Versions 1.3.8 and prior has a stack-based buffer overflow vulnerability has been identified that may allow arbitrary code EPSS 1.8%CVE-2025-0349HIGHTenda AC6 GetParentControlInfo stack-based overflowEPSS 1.8%CVE-2023-49909HIGHA stack-based buffer overflow vulnerability exists in the web interface Radio Scheduling functionality of Tp-Link AC1350 Wireless MU-MIMO GiEPSS 1.8%CVE-2023-49907HIGHA stack-based buffer overflow vulnerability exists in the web interface Radio Scheduling functionality of Tp-Link AC1350 Wireless MU-MIMO GiEPSS 1.8%CVE-2023-49912HIGHA stack-based buffer overflow vulnerability exists in the web interface Radio Scheduling functionality of Tp-Link AC1350 Wireless MU-MIMO GiEPSS 1.8%CVE-2023-49911HIGHA stack-based buffer overflow vulnerability exists in the web interface Radio Scheduling functionality of Tp-Link AC1350 Wireless MU-MIMO GiEPSS 1.8%CVE-2023-49910HIGHA stack-based buffer overflow vulnerability exists in the web interface Radio Scheduling functionality of Tp-Link AC1350 Wireless MU-MIMO GiEPSS 1.8%