Weaknesses of type CWE-457

245 results

Uso de variável não inicializada

Ocorre quando o código lê o valor de uma variável antes de atribuir um valor explícito a ela. Dependendo do contexto (memória da stack, heap, ou dados globais), a variável contém lixo de memória, levando a comportamentos impredizíveis: crashes, vazamento de informações ou execução descontrolada.

Example

Um programa aloca um buffer na stack e o passa para uma função sem preenchê-lo antes. Se a função escrever dados sensíveis nesse espaço e depois enviá-lo pela rede, credenciais ou tokens anteriormente na memória podem ser expostos. Ou a leitura do valor lixo causa uma condição de corrida ou salto de endereço inválido.

How to mitigate

Inicialize todas as variáveis no ponto de declaração (int x = 0; char buf[256] = {0};). Use ferramentas de análise estática (cppcheck, clang-tidy) e sanitizers do compilador (-fsanitize=memory no GCC/Clang) para detectar usos antes da inicialização. Em linguagens de nível mais alto, confie no zeroing automático fornecido pelo runtime.

CVE-2026-11033MEDIUMUninitialized Use in WebML in Google Chrome on Mac prior to 149.0.7827.53 allowed a remote attacker to obtain potentially sensitive informatEPSS 0.3%CVE-2026-11057MEDIUMUninitialized Use in Skia in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to obtaEPSS 0.3%CVE-2026-11138MEDIUMUninitialized Use in ANGLE in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted HTML paEPSS 0.3%CVE-2026-11123MEDIUMUninitialized Use in ANGLE in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to obtain potentially sensitive information froEPSS 0.3%CVE-2026-11101MEDIUMUninitialized Use in Dawn in Google Chrome on Windows prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a craftEPSS 0.3%CVE-2026-11104MEDIUMUninitialized Use in ANGLE in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to obtEPSS 0.3%CVE-2026-11090MEDIUMUninitialized Use in ANGLE in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted HTML paEPSS 0.3%CVE-2026-11109MEDIUMUninitialized Use in ANGLE in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted HTML paEPSS 0.3%CVE-2026-11067MEDIUMUninitialized Use in Dawn in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to obtain potentially sensitive information fromEPSS 0.3%CVE-2026-11089MEDIUMUninitialized Use in Media in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to obtEPSS 0.3%CVE-2026-11039MEDIUMUninitialized Use in Skia in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted HTML pagEPSS 0.3%CVE-2026-11087MEDIUMUninitialized Use in ANGLE in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to leaEPSS 0.3%CVE-2026-11268MEDIUMUninitialized Use in ANGLE in Google Chrome on Windows prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafEPSS 0.3%CVE-2026-11110MEDIUMUninitialized Use in ANGLE in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted HTML paEPSS 0.3%CVE-2026-11137MEDIUMUninitialized Use in ANGLE in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to obtain potentially sensitive information froEPSS 0.3%CVE-2026-11141MEDIUMUninitialized Use in Audio in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to obtEPSS 0.3%CVE-2025-1427HIGHCATPRODUCT File Parsing Uninitialized Variable VulnerabilityEPSS 0.2%CVE-2024-47966HIGHUse of Uninitialized Variable vulnerability in Delta Electronics CNCSoft-G2EPSS 0.2%CVE-2025-26383MEDIUMThe iSTAR Configuration Utility (ICU) tool leaks memory, which could result in the unintended exposure of unauthorized data from the WindowsEPSS 0.2%CVE-2026-7955MEDIUMUninitialized Use in GPU in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to obtaiEPSS 0.2%