Fallos del tipo CWE-121

3839 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-2023-39281MEDIUMA stack buffer overflow vulnerability discovered in AsfSecureBootDxe in Insyde InsydeH2O with kernel 5.0 through 5.5 allows attackers to runEPSS 0.5%CVE-2026-67248HIGHA stack-based buffer overflow vulnerability was found in the File Explorer on the ADMEPSS 0.5%CVE-2025-70307HIGHA stack overflow in the dump_ttxt_sample function of GPAC v2.4.0 allows attackers to cause a Denial of Service (DoS) via a crafted packet.EPSS 0.5%CVE-2022-22281—A buffer overflow vulnerability in the SonicWall SSL-VPN NetExtender Windows Client (32 and 64 bit) in 10.2.322 and earlier versions, allowsEPSS 0.5%CVE-2025-70221CRITICALStack buffer overflow vulnerability in D-Link DIR-513 v1.10 via the curTime parameter to goform/formLogin.EPSS 0.5%CVE-2025-70222CRITICALStack buffer overflow vulnerability in D-Link DIR-513 v1.10 via the curTime parameter to goform/formLogin,goform/getAuthCode.EPSS 0.5%CVE-2025-70226CRITICALStack buffer overflow vulnerability in D-Link DIR-513 v1.10 via the curTime parameter to goform/formEasySetupWizard.EPSS 0.5%CVE-2023-4263HIGHPotential buffer overflow vulnerability in the Zephyr IEEE 802.15.4 nRF 15.4 driverEPSS 0.5%CVE-2025-70225CRITICALStack buffer overflow vulnerability in D-Link DIR-513 v1.10 via the curtime parameter to the goform/formEasySetupWWConfig componentEPSS 0.5%CVE-2026-10259HIGHH3C Magic B0 aspForm SetMobileAPInfoById stack-based overflowEPSS 0.5%CVE-2024-45415CRITICALThe HTTPD binary in multiple ZTE routers has a stack-based buffer overflow vulnerability in check_data_integrity function. This function is EPSS 0.5%CVE-2025-32387MEDIUMHelm Allows A Specially Crafted JSON Schema To Cause A Stack OverflowEPSS 0.5%CVE-2024-45414CRITICALThe HTTPD binary in multiple ZTE routers has a stack-based buffer overflow vulnerability in webPrivateDecrypt function. This function is resEPSS 0.5%CVE-2025-20350HIGHCisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Firmware Denial of Service VulnerabilityEPSS 0.5%CVE-2024-40722MEDIUMCHANGING Information Technology TCBServiSign Windows Version - Stack-based Buffer OverflowEPSS 0.5%CVE-2020-37120HIGHRubo DICOM Viewer 2.0 - Buffer Overflow (SEH)EPSS 0.5%CVE-2024-40723MEDIUMCHANGING Information Technology HWATAIServiSign Windows Version - Stack-based Buffer OverflowEPSS 0.5%CVE-2026-11413HIGHJingDong JD Cloud Box AX6600 jdcweb_rpc set_macfilter stack-based overflowEPSS 0.5%CVE-2024-32312MEDIUMTenda F1203 V2.0.1.6 firmware has a stack overflow vulnerability located in the adslPwd parameter of the formWanParameterSetting function.EPSS 0.5%CVE-2025-25896MEDIUMA buffer overflow vulnerability was discovered in D-Link DSL-3782 v1.01 via the destination, netmask, and gateway parameters. This vulnerabiEPSS 0.5%