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-2017-16329HIGHMultiple exploitable buffer overflow vulnerabilities exist in the PubNub message handler for the "cc" channel of Insteon Hub running firmwarEPSS 0.9%CVE-2017-16299HIGHMultiple exploitable buffer overflow vulnerabilities exist in the PubNub message handler for the "cc" channel of Insteon Hub running firmwarEPSS 0.9%CVE-2017-16260HIGHMultiple exploitable buffer overflow vulnerabilities exist in the PubNub message handler for the "cc" channel of Insteon Hub running firmwarEPSS 0.9%CVE-2017-16327HIGHMultiple exploitable buffer overflow vulnerabilities exist in the PubNub message handler for the "cc" channel of Insteon Hub running firmwarEPSS 0.9%CVE-2017-16266HIGHMultiple exploitable buffer overflow vulnerabilities exist in the PubNub message handler for the "cc" channel of Insteon Hub running firmwarEPSS 0.9%CVE-2026-76689HIGHAuthenticated Buffer Overflow Vulnerability leads to Remote Code Execution or Denial-of-Service in HPE Networking EdgeConnect SD-WAN GatewaysEPSS 0.9%CVE-2026-64831HIGHFFmpeg 8.0 - 8.1.2 Stack Buffer Overflow in Vulkan HEVC DecoderEPSS 0.9%CVE-2026-4172HIGHTRENDnet TEW-632BRP HTTP POST Request ping_response.cgi stack-based overflowEPSS 0.9%CVE-2025-3887HIGHGStreamer H265 Codec Parsing Stack-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.9%CVE-2025-7853HIGHTenda FH451 SetIpBind fromSetIpBind stack-based overflowEPSS 0.8%CVE-2026-80146CRITICALLantronix Autonomous Out-of-Band Devices Stack-Based Buffer Overflow via mfc eeprom readEPSS 0.8%CVE-2026-80147CRITICALLantronix Autonomous Out-of-Band Devices Stack-Based Buffer Overflow via mfc eeprom writeEPSS 0.8%CVE-2026-51846CRITICALIn Tenda AC7 v15.03.06.44, the wanSpeed parameter of the route /goform/AdvSetMacMtuWan has a stack buffer overflow vulnerability that can leEPSS 0.8%CVE-2025-9748HIGHTenda CH22 httpd IPSECsave fromIpsecitem stack-based overflowEPSS 0.8%CVE-2026-4188HIGHD-Link DIR-619L boa formSchedule stack-based overflowEPSS 0.8%CVE-2024-0927MEDIUMTenda AC10U fromAddressNat stack-based overflowEPSS 0.8%CVE-2024-28551HIGHTenda AC18 V15.03.05.05 has a stack overflow vulnerability in the ssid parameter of form_fast_setting_wifi_set function.EPSS 0.8%CVE-2026-5548HIGHTenda AC10 httpd fromSysToolChangePwd stack-based overflowEPSS 0.8%CVE-2025-60699MEDIUMA buffer overflow vulnerability exists in the TOTOLINK A950RG Router firmware V5.9c.4592_B20191022_ALL within the `global.so` binary. The `gEPSS 0.8%CVE-2024-37049MEDIUMQTS, QuTS heroEPSS 0.8%