Fallos del tipo CWE-121

3831 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-2025-7854HIGHTenda FH451 VirtualSer fromVirtualSer stack-based overflowEPSS 1.1%CVE-2025-7586HIGHTenda AC500 setWtpData formSetAPCfg stack-based overflowEPSS 1.1%CVE-2025-7551HIGHTenda FH1201 PPTPDClient fromPptpUserAdd stack-based overflowEPSS 1.1%CVE-2024-51138CRITICALVigor165/166 4.2.7 and earlier; Vigor2620/LTE200 3.9.8.9 and earlier; Vigor2860/2925 3.9.8 and earlier; Vigor2862/2926 3.9.9.5 and earlier; EPSS 1.1%CVE-2023-38584CRITICALWeintek cMT3000 HMI Web CGI Stack-based Buffer OverflowEPSS 1.1%CVE-2025-7531HIGHTenda FH1202 PPTPUserSetting fromPptpUserSetting stack-based overflowEPSS 1.1%CVE-2023-41204HIGHD-Link DAP-1325 SetAPLanSettings SecondaryDNS Stack-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.0%CVE-2023-41205HIGHD-Link DAP-1325 SetAPLanSettings SubnetMask Stack-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.0%CVE-2023-41202HIGHD-Link DAP-1325 SetAPLanSettings Mode Stack-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.0%CVE-2023-41209HIGHD-Link DAP-1325 SetHostIPv6StaticSettings StaticDNS1 Stack-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.0%CVE-2023-41208HIGHD-Link DAP-1325 SetHostIPv6StaticSettings StaticDefaultGateway Stack-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.0%CVE-2023-41206HIGHD-Link DAP-1325 SetHostIPv6Settings IPv6Mode Stack-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.0%CVE-2023-35718HIGHD-Link DAP-2622 DDP Change ID Password Auth Password Stack-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.0%CVE-2023-41211HIGHD-Link DAP-1325 SetHostIPv6StaticSettings StaticPrefixLength Stack-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.0%CVE-2023-41203HIGHD-Link DAP-1325 SetAPLanSettings PrimaryDNS Stack-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.0%CVE-2023-41207HIGHD-Link DAP-1325 SetHostIPv6StaticSettings StaticAddress Stack-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.0%CVE-2023-41214HIGHD-Link DAP-1325 setDhcpAssignRangeUpdate lan_ipaddr Stack-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.0%CVE-2023-41210HIGHD-Link DAP-1325 SetHostIPv6StaticSettings StaticDNS2 Stack-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.0%CVE-2023-41213HIGHD-Link DAP-1325 setDhcpAssignRangeUpdate lan_ipaddr Stack-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.0%CVE-2023-41212HIGHD-Link DAP-1325 SetTriggerAPValidate Key Stack-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.0%