Falhas do tipo CWE-822

213 resultados

Desreferência de ponteiro não confiável

Ocorre quando o código desreferencia um ponteiro cujo valor veio de uma fonte externa (entrada do usuário, rede, arquivo) sem validação prévia. Um atacante pode fornecer um endereço de memória inválido ou malicioso, causando crash, leitura de dados sensíveis ou execução de código arbitrário.

Exemplo

Um aplicativo recebe um offset de memória via requisição HTTP, converte para ponteiro e acessa dados sem verificar se o endereço é válido: int *ptr = (int *)user_input; int valor = *ptr;. O atacante fornece um endereço inválido ou que aponta para região protegida.

Como mitigar

Nunca confie em ponteiros ou endereços vindos de entrada externa. Se necessário, use estruturas de dados gerenciadas (arrays, listas), validação rigorosa de limites, ou isolamento via sandboxing. Em linguagens modernas (C++, Rust), prefira smart pointers e verificações em tempo de compilação.

CVE-2023-21768HIGHWindows Ancillary Function Driver for WinSock Elevation of Privilege VulnerabilityEPSS 65.4%CVE-2024-21338HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 59.8%KEVCVE-2024-35250HIGHWindows Kernel-Mode Driver Elevation of Privilege VulnerabilityEPSS 25.2%KEVCVE-2023-29360HIGHMicrosoft Streaming Service Elevation of Privilege VulnerabilityEPSS 22.1%KEVCVE-2023-36033HIGHWindows DWM Core Library Elevation of Privilege VulnerabilityEPSS 12.0%KEVCVE-2025-50165CRITICALWindows Graphics Component Remote Code Execution VulnerabilityEPSS 9.5%CVE-2019-13334HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PhantomPDF 9.5.0.20723. User interacEPSS 6.8%CVE-2018-17893—LAquis SCADA Versions 4.1.0.3870 and prior has an untrusted pointer dereference vulnerability, which may allow remote code execution.EPSS 6.4%CVE-2025-24990HIGHWindows Agere Modem Driver Elevation of Privilege VulnerabilityEPSS 6.0%KEVCVE-2025-55681HIGHDesktop Window Manager Elevation of Privilege VulnerabilityEPSS 5.2%CVE-2026-40369HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 4.7%CVE-2024-21346HIGHWin32k Elevation of Privilege VulnerabilityEPSS 4.1%CVE-2020-26991—A vulnerability has been identified in JT2Go (All versions < V13.1.0.2), Teamcenter Visualization (All versions < V13.1.0.2). Affected appliEPSS 4.0%CVE-2024-43629HIGHWindows DWM Core Library Elevation of Privilege VulnerabilityEPSS 3.9%CVE-2018-14811—Fuji Electric V-Server 4.0.3.0 and prior, Multiple untrusted pointer dereference vulnerabilities have been identified, which may allow remotEPSS 3.6%CVE-2024-26254HIGHMicrosoft Virtual Machine Bus (VMBus) Denial of Service VulnerabilityEPSS 3.1%CVE-2017-12719—An Untrusted Pointer Dereference issue was discovered in Advantech WebAccess versions prior to V8.2_20170817. A remote attacker is able to eEPSS 3.1%CVE-2018-7497—In Advantech WebAccess versions V8.2_20170817 and prior, WebAccess versions V8.3.0 and prior, WebAccess Dashboard versions V.2.0.15 and prioEPSS 2.9%CVE-2023-1437CRITICALCVE-2023-1437EPSS 2.8%CVE-2020-27259—Omron CX-OneEPSS 2.7%