Falhas do tipo CWE-787

5.846 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-2022-23574HIGHOut of bounds read and write in TensorflowEPSS 0.8%CVE-2026-42944HIGHHeap overflow with multiple NSID, COOKIE, PADDING EDNS optionsEPSS 0.8%CVE-2026-114550HIGHlibwebsockets MQTT Protocol PUBACK Packet Handling Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 0.8%CVE-2023-32886HIGHIn Modem IMS SMS UA, there is a possible out of bounds write due to a missing bounds check. This could lead to remote denial of service withEPSS 0.8%CVE-2023-1801—The SMB protocol decoder in tcpdump version 4.99.3 can perform an out-of-bounds write when decoding a crafted network packet.EPSS 0.8%CVE-2026-86510CRITICALD-Link DIR-822A L2TP Control Message tunnel_set_params out-of-bounds writeEPSS 0.8%CVE-2026-82680HIGHD-Link DSM-G600 Multipart load_file.cgi out-of-bounds writeEPSS 0.8%CVE-2021-44443—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 0.8%CVE-2021-44446—A vulnerability has been identified in JT Utilities (All versions < V13.0.3.0), JTTK (All versions < V11.0.3.0). JTTK library in affected prEPSS 0.8%CVE-2021-44441—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 0.8%CVE-2021-44430—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 0.8%CVE-2021-44434—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 0.8%CVE-2021-42024—A vulnerability has been identified in Simcenter STAR-CCM+ Viewer (All versions < 2021.3.1). The starview+.exe application lacks proper valiEPSS 0.8%CVE-2021-44438—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 0.8%CVE-2021-44437—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 0.8%CVE-2021-44449—A vulnerability has been identified in JT Utilities (All versions < V12.8.1.1), JTTK (All versions < V10.8.1.1). JTTK library in affected prEPSS 0.8%CVE-2023-27239CRITICALTenda AX3 V16.03.12.11 was discovered to contain a stack overflow via the shareSpeed parameter at /goform/WifiGuestSet.EPSS 0.8%CVE-2022-1403HIGHDelta Electronics ASDA-Soft Out-of-bounds WriteEPSS 0.8%CVE-2018-25221CRITICALEChat Server 3.1 Buffer Overflow via chat.ghp username ParameterEPSS 0.8%CVE-2023-29584HIGHmp4v2 v2.0.0 was discovered to contain a heap buffer overflow via the MP4GetVideoProfileLevel function at /src/mp4.cpp.EPSS 0.8%