Fallos del tipo CWE-121

3825 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-2024-0536HIGHTenda W9 httpd setWrlAccessList stack-based overflowEPSS 1.4%CVE-2024-0538HIGHTenda W9 httpd formQosManage_auto stack-based overflowEPSS 1.4%CVE-2009-20007CRITICALTalkative IRC v0.4.4.16 Response Buffer OverflowEPSS 1.4%CVE-2024-41592HIGHDrayTek Vigor3910 devices through 4.3.2.6 have a stack-based overflow when processing query string parameters because GetCGI mishandles extrEPSS 1.4%CVE-2020-14511—Malicious operation of the crafted web browser cookie may cause a stack-based buffer overflow in the system web server on the EDR-G902 and EEPSS 1.4%CVE-2013-10068CRITICALFoxit Reader <= 5.4.5.0114 Plugin URL Processing Buffer OverflowEPSS 1.4%CVE-2025-9481HIGHLinksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 setIpv6 stack-based overflowEPSS 1.4%CVE-2025-68670CRITICALxrdp improperly checks bounds of domain string length, which leads to Stack-based Buffer OverflowEPSS 1.4%CVE-2023-35322HIGHWindows Deployment Services Remote Code Execution VulnerabilityEPSS 1.4%CVE-2025-5912HIGHD-Link DIR-632 HTTP POST Request do_file stack-based overflowEPSS 1.4%CVE-2023-21732HIGHMicrosoft ODBC Driver Remote Code Execution VulnerabilityEPSS 1.4%CVE-2024-2808HIGHTenda AC15 QuickIndex formQuickIndex stack-based overflowEPSS 1.4%CVE-2021-34980HIGHThis vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6260 1.1.0.78_1.0.1 rouEPSS 1.4%CVE-2024-2807HIGHTenda AC15 expandDlnaFile formExpandDlnaFile stack-based overflowEPSS 1.4%CVE-2024-7581HIGHTenda A301 WifiBasicSet formWifiBasicSet stack-based overflowEPSS 1.4%CVE-2009-20005CRITICALInterSystems Caché UtilConfigHome.csp Stack Buffer OverflowEPSS 1.4%CVE-2024-9043CRITICALCellopoint Secure Email Gateway - Buffer OverflowEPSS 1.4%CVE-2024-48871CRITICALPlanet Technology Planet WGS-804HPT Stack-based Buffer OverflowEPSS 1.4%CVE-2024-6189HIGHTenda A301 WifiExtraSet fromSetWirelessRepeat stack-based overflowEPSS 1.4%CVE-2024-4171HIGHTenda W30E WizardHandle fromWizardHandle stack-based overflowEPSS 1.4%