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-2023-41215HIGHD-Link DAP-2622 DDP Set Date-Time Stack-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.9%CVE-2025-14133HIGHLinksys RE6500/RE6250/RE6300/RE6350/RE7000/RE9000 mod_form.so AP_get_wireless_clientlist_setClientsName stack-based overflowEPSS 0.9%CVE-2025-14134HIGHLinksys RE6500/RE6250/RE6300/RE6350/RE7000/RE9000 mod_form.so stack-based overflowEPSS 0.9%CVE-2025-54820HIGHA Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiManager 7.4.0 through 7.4.2, FortiManager 7.2.0 throughEPSS 0.9%CVE-2025-14135HIGHLinksys RE6500/RE6250/RE6300/RE6350/RE7000/RE9000 mod_form.so AP_get_wired_clientlist_setClientsName stack-based overflowEPSS 0.9%CVE-2023-51566HIGHKofax Power PDF OXPS File Parsing Stack-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.9%CVE-2024-10351HIGHTenda RX9 Pro POST Request setMacFilterCfg sub_424CE0 stack-based overflowEPSS 0.9%CVE-2021-44432—A vulnerability has been identified in JT Utilities (All versions < V13.1.1.0), JTTK (All versions < V11.1.1.0). JTTK library in affected prEPSS 0.9%CVE-2026-28846HIGHA buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5EPSS 0.9%CVE-2025-15179HIGHTenda WH450 qossetting stack-based overflowEPSS 0.9%CVE-2021-44435—A vulnerability has been identified in JT Utilities (All versions < V13.1.1.0), JTTK (All versions < V11.1.1.0). JTTK library in affected prEPSS 0.9%CVE-2019-25364CRITICALWin10 MailCarrier 2.51 - 'POP3 User' Remote Buffer OverflowEPSS 0.9%CVE-2009-10006CRITICALUFO: Alien Invasion <= 2.2.1 IRC Client Buffer OverflowEPSS 0.9%CVE-2025-15160HIGHTenda WH450 PPTPServer stack-based overflowEPSS 0.9%CVE-2025-11586HIGHTenda AC7 setNotUpgrade stack-based overflowEPSS 0.9%CVE-2025-7505HIGHTenda FH451 HTTP POST Request L7Prot frmL7ProtForm stack-based overflowEPSS 0.9%CVE-2025-7506HIGHTenda FH451 HTTP POST Request Natlimit fromNatlimit stack-based overflowEPSS 0.9%CVE-2025-7806HIGHTenda FH451 SafeClientFilter fromSafeClientFilter stack-based overflowEPSS 0.9%CVE-2025-7807HIGHTenda FH451 SafeUrlFilter fromSafeUrlFilter stack-based overflowEPSS 0.9%CVE-2025-7805HIGHTenda FH451 PPTPUserSetting fromPptpUserSetting stack-based overflowEPSS 0.9%