Falhas do tipo CWE-126

580 resultados

Leitura além dos limites do buffer em pilha

A aplicação lê dados além do tamanho alocado de um buffer armazenado na pilha (stack), acessando memória que não deveria. Diferente do overflow que escreve, aqui o problema é ler lixo de memória adjacente, expondo informações sensíveis ou causando crash se a memória for inacessível.

Exemplo

Uma função copia uma string para um buffer de 16 bytes, mas depois tenta processar 32 bytes do buffer sem validar o tamanho real. O código lê dados da pilha que pertencem a outras variáveis ou endereços de retorno, vazando informações ou provocando segfault.

Como mitigar

Sempre validar o tamanho dos dados antes de ler; usar funções seguras (strlen, strnlen) com limites explícitos; ativar canários de pilha (stack canaries) no compilador para detectar corrupção; fazer code review focado em loops e operações de memória sem bounds checking.

CVE-2024-38250HIGHWindows Graphics Component Elevation of Privilege VulnerabilityEPSS 0.7%CVE-2023-24513MEDIUMOn affected platforms running Arista CloudEOS a size check bypass issue in the Software Forwarding Engine (Sfe) may allow buffer over reads in later code. Additionally, depending on configured options this may cause a recomputation of the TCP checksum ...EPSS 0.7%CVE-2023-36773HIGH3D Builder Remote Code Execution VulnerabilityEPSS 0.7%CVE-2024-38135HIGHWindows Resilient File System (ReFS) Elevation of Privilege VulnerabilityEPSS 0.7%CVE-2024-28900MEDIUMWindows Remote Access Connection Manager Information Disclosure VulnerabilityEPSS 0.7%CVE-2024-28901MEDIUMWindows Remote Access Connection Manager Information Disclosure VulnerabilityEPSS 0.7%CVE-2025-32052MEDIUMLibsoup: heap buffer overflow in sniff_unknown()EPSS 0.7%CVE-2025-32053MEDIUMLibsoup: heap buffer overflows in sniff_feed_or_html() and skip_insignificant_space()EPSS 0.7%CVE-2022-2301MEDIUMBuffer Over-read in hpjansson/chafaEPSS 0.7%CVE-2024-30079HIGHWindows Remote Access Connection Manager Elevation of Privilege VulnerabilityEPSS 0.7%CVE-2026-50485MEDIUMWindows Hyper-V Denial of Service VulnerabilityEPSS 0.7%CVE-2026-69474MEDIUMWindows Overlay Filter Information Disclosure VulnerabilityEPSS 0.7%CVE-2026-69416MEDIUMWindows DHCP Server Denial of Service VulnerabilityEPSS 0.6%CVE-2025-54901MEDIUMMicrosoft Excel Information Disclosure VulnerabilityEPSS 0.6%CVE-2023-21820HIGHWindows Distributed File System (DFS) Remote Code Execution VulnerabilityEPSS 0.6%CVE-2024-42333LOWHeap buffer over-readEPSS 0.6%CVE-2024-43500MEDIUMWindows Resilient File System (ReFS) Information Disclosure VulnerabilityEPSS 0.6%CVE-2026-88201MEDIUMMicrosoft Office Excel Information Disclosure VulnerabilityEPSS 0.6%CVE-2026-41992MEDIUMGlobal Buffer Overflow in GNU gzipEPSS 0.6%CVE-2024-38373CRITICALFreeRTOS-Plus-TCP Buffer Over-Read in DNS Response ParserEPSS 0.6%