Falhas do tipo CWE-787

5.212 resultados

Escrita fora dos limites de memória

Ocorre quando um programa escreve dados em um endereço de memória fora da área alocada para um buffer ou variável. O código não valida o tamanho ou índice antes de gravar, permitindo sobrescrita de dados adjacentes, corrupção de estruturas críticas ou execução de código arbitrário.

Exemplo

Um formulário web que copia dados do usuário para um buffer de 256 bytes sem validar o tamanho da entrada. Se o atacante envia 500 bytes, a escrita transborda e sobrescreve a pilha, podendo hijackear o endereço de retorno da função.

Como mitigar

Use funções seguras de cópia (strncpy, strlcpy ao invés de strcpy; memcpy com tamanho máximo explícito) e sempre valide comprimento e índices antes de escrever. Em linguagens modernas, prefira estruturas com bounds-checking automático (arrays em Java, Rust, etc).

CVE-2021-47765MEDIUMAbsoluteTelnet 11.24 - 'Username' Denial of Service (PoC)EPSS 0.2%CVE-2026-18821HIGHPower System Out-of-bounds WriteEPSS 0.2%CVE-2026-21318HIGHAfter Effects | Out-of-bounds Write (CWE-787)EPSS 0.2%CVE-2024-27379MEDIUMAn issue was discovered in Samsung Mobile Processor Exynos 980, Exynos 850, Exynos 1280, Exynos 1380, and Exynos 1330. In the function slsi_EPSS 0.2%CVE-2026-21335HIGHSubstance3D - Designer | Out-of-bounds Write (CWE-787)EPSS 0.2%CVE-2026-21312HIGHAudition | Out-of-bounds Write (CWE-787)EPSS 0.2%CVE-2023-21506MEDIUMOut-of-bounds Write vulnerability while processing BC_TUI_CMD_SEND_RESOURCE_DATA_ARRAY command in bc_tui trustlet from Samsung Blockchain KeEPSS 0.2%CVE-2026-0538HIGHGIF File Parsing Out-of-Bounds WriteEPSS 0.2%CVE-2024-7993HIGHOut-of-Bounds Write Vulnerability in Autodesk RevitEPSS 0.2%CVE-2026-33491HIGHZen-C has Stack-Based Buffer Overflow in Identifier ManglingEPSS 0.2%CVE-2018-9373HIGHIn TdlsexRxFrameHandle of the MTK WLAN driver, there is a possible out of bounds write due to a missing bounds check. This could lead to remEPSS 0.2%CVE-2026-0661HIGHOut-of-Bounds Write in RGB File ParsingEPSS 0.2%CVE-2026-0537HIGHRGB File Parsing Memory CorruptionEPSS 0.2%CVE-2026-68513HIGHOpenEXR: Heap buffer overflow in PyOpenEXR from literal/prefixed RGB channel name collisionEPSS 0.2%CVE-2026-54758HIGHNotepad++: Stack Buffer Overflow in expandNppEnvironmentStrsEPSS 0.2%CVE-2025-49572HIGHSubstance3D - Modeler | Out-of-bounds Write (CWE-787)EPSS 0.2%CVE-2025-54187HIGHSubstance3D - Painter | Out-of-bounds Write (CWE-787)EPSS 0.2%CVE-2026-54692HIGHSAIL: XBM X10 decoder writes 2 bytes per literal into a 1-byte-per-literal buffer (heap out-of-bounds write)EPSS 0.2%CVE-2025-49573HIGHSubstance3D - Modeler | Out-of-bounds Write (CWE-787)EPSS 0.2%CVE-2026-21678HIGHiccDEV has heap-buffer-overflow vulnerability on IccTagXml()EPSS 0.2%