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-2026-26731HIGHTOTOLINK A3002RU V2.1.1-B20211108.1455 was discovered to contain a stack-based buffer overflow via the routernamer`parameter in the formDnsvEPSS 1.3%CVE-2024-0571HIGHTotolink LR1200GB cstecgi.cgi setSmsCfg stack-based overflowEPSS 1.3%CVE-2024-0572HIGHTotolink LR1200GB cstecgi.cgi setOpModeCfg stack-based overflowEPSS 1.3%CVE-2024-8230HIGHTenda O6 setMacFilterList fromSafeSetMacFilter stack-based overflowEPSS 1.3%CVE-2025-4809HIGHTenda AC7 setMacFilterCfg fromSafeSetMacFilter stack-based overflowEPSS 1.3%CVE-2022-3385CRITICAL Advantech R-SeeNet Versions 2.4.17 and prior are vulnerable to a stack-based buffer overflow. An unauthorized attacker can remotely overfloEPSS 1.3%CVE-2022-3386CRITICAL Advantech R-SeeNet Versions 2.4.17 and prior are vulnerable to a stack-based buffer overflow. An unauthorized attacker can use an outsized EPSS 1.3%CVE-2026-4254CRITICALTenda AC8 HTTP Endpoint SysToolChangePwd doSystemCmd stack-based overflowEPSS 1.3%CVE-2026-4213HIGHD-Link DNS-1550-04 gui_mgr.cgi cgi_myfavorite_verify stack-based overflowEPSS 1.3%CVE-2024-11745HIGHTenda AC8 SetStaticRouteCfg route_static_check stack-based overflowEPSS 1.3%CVE-2023-51626HIGHD-Link DCS-8300LHV2 RTSP ValidateAuthorizationHeader Username Stack-Based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.3%CVE-2024-2815HIGHTenda AC15 Cookie execCommand R7WebsSecurityHandler stack-based overflowEPSS 1.3%CVE-2023-51624HIGHD-Link DCS-8300LHV2 RTSP ValidateAuthorizationHeader Nonce Stack-Based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.3%CVE-2024-2806HIGHTenda AC15 addWifiMacFilter stack-based overflowEPSS 1.3%CVE-2024-2813HIGHTenda AC15 fast_setting_wifi_set form_fast_setting_wifi_set stack-based overflowEPSS 1.3%CVE-2024-2814HIGHTenda AC15 DhcpListClient fromDhcpListClient stack-based overflowEPSS 1.3%CVE-2024-2810HIGHTenda AC15 WifiWpsOOB formWifiWpsOOB stack-based overflowEPSS 1.3%CVE-2024-33599HIGHnscd: Stack-based buffer overflow in netgroup cacheEPSS 1.3%CVE-2022-22989CRITICALPre-authenticated stack overflow vulnerability on FTP ServiceEPSS 1.3%CVE-2022-32502MEDIUMAn issue was discovered on certain Nuki Home Solutions devices. There is a buffer overflow over the encrypted token parsing logic in the HTTEPSS 1.3%