Weaknesses of type CWE-121

3,825 results

Estouro de buffer na pilha

Ocorre quando um programa escreve mais dados em um buffer alocado na pilha do que ele pode conter, sobrescrevendo dados adjacentes (variáveis, endereços de retorno, ponteiros). Um atacante pode explorar isso para executar código arbitrário ou causar travamento.

Example

Um programa lê uma string do usuário com gets() ou strcpy() sem validar o tamanho, copiando 500 bytes para um buffer de 64 bytes. O excesso sobrescreve o endereço de retorno da função, permitindo desviar a execução para código malicioso.

How to mitigate

Use funções seguras (strncpy, fgets, snprintf) que aceitam limite de bytes; implemente verificações de limites explícitas no código; ative proteções do compilador/SO (stack canaries, DEP/NX, ASLR); use linguagens com verificação automática de limites ou ferramentas de análise estática.

CVE-2026-3975HIGHTenda W3 POST Parameter WifiMacFilterGet formWifiMacFilterGet stack-based overflowEPSS 1.0%CVE-2026-5021HIGHTenda F453 httpd PPTPUserSetting fromPPTPUserSetting stack-based overflowEPSS 1.0%CVE-2026-3727HIGHTenda F453 QuickIndex sub_3C6C0 stack-based overflowEPSS 1.0%CVE-2026-3804HIGHTenda i3 WifiMacFilterSet formWifiMacFilterSet stack-based overflowEPSS 1.0%CVE-2026-3728HIGHTenda F453 setcfm fromSetCfm stack-based overflowEPSS 1.0%CVE-2026-4902HIGHTenda AC5 POST Request addressNat fromAddressNat memory corruptionEPSS 1.0%CVE-2026-4975HIGHTenda AC15 POST Request setcfm formSetCfm memory corruptionEPSS 1.0%CVE-2026-5609HIGHTenda i12 Parameter wifiSSIDset formwrlSSIDset stack-based overflowEPSS 1.0%CVE-2026-4906HIGHTenda AC5 POST Request WizardHandle decodePwd stack-based overflowEPSS 1.0%CVE-2026-5156HIGHTenda CH22 Parameter QuickIndex formQuickIndex stack-based overflowEPSS 1.0%CVE-2026-5046HIGHTenda FH1201 Parameter WrlExtraSet formWrlExtraSet stack-based overflowEPSS 1.0%CVE-2022-25785MEDIUMBuffer overrunEPSS 1.0%CVE-2026-1761HIGHLibsoup: stack-based buffer overflow in libsoup multipart response parsingmultipart http responseEPSS 1.0%CVE-2021-31383HIGHJunos OS and Junos OS Evolved: In Point to MultiPoint (P2MP) scenarios receipt of various crafted packets causes RPD to core.EPSS 1.0%CVE-2025-8820HIGHLinksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 wirelessBasic stack-based overflowEPSS 1.0%CVE-2025-8824HIGHLinksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 setRIP stack-based overflowEPSS 1.0%CVE-2025-8819HIGHLinksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 setWan stack-based overflowEPSS 1.0%CVE-2026-59692HIGHGstreamer1-plugins-bad-free: gstreamer: dtls certificate subject dn stack buffer overflow in openssl_verify_callbackEPSS 1.0%CVE-2025-8816HIGHLinksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 setOpMode stack-based overflowEPSS 1.0%CVE-2025-8826HIGHLinksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 RP_setBasicAuto um_rp_autochannel stack-based overflowEPSS 1.0%