Weaknesses of type CWE-787

5,848 results

Escrita fora dos limites da memória

Ocorre quando o código escreve dados em um endereço de memória fora do intervalo alocado para uma estrutura (array, buffer, objeto). O programa não valida o tamanho ou índice antes de escrever, permitindo sobrescrever memória adjacente — causando corrupção de dados, queda da aplicação ou execução arbitrária de código.

Example

Um formulário web que copia o valor de um campo do usuário para um buffer de 64 bytes sem verificar o comprimento: se o atacante enviar 200 caracteres, a escrita invade a memória vizinha e pode sobrescrever um ponteiro de função ou variável crítica.

How to mitigate

Sempre validar tamanhos de entrada antes de copiar (usar `strncpy` em vez de `strcpy`, ou bibliotecas seguras como `bounds-checking`); usar linguagens com verificação automática de limites (Java, Rust); aplicar testes de fuzzing e análise estática de código para detectar escritas desprotegidas.

CVE-2023-51968CRITICALTenda AX1803 v1.0.0.1 contains a stack overflow via the adv.iptv.stballvlans parameter in the function getIptvInfo.EPSS 0.7%CVE-2023-51970CRITICALTenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.stb.mode parameter in the function formSetIptv.EPSS 0.7%CVE-2026-112486HIGHAn out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7.2 and iPadOS 26.7.2, iOS 27.2 and EPSS 0.7%CVE-2024-20067CRITICALIn modem, there is a possible out of bounds write due to improper input invalidation. This could lead to remote denial of service with no adEPSS 0.7%CVE-2026-13384HIGHWatchGuard Firebox wgagent Out of Bounds Write VulnerabilityEPSS 0.7%CVE-2024-5508HIGHLuxion KeyShot Viewer KSP File Parsing Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 0.7%CVE-2024-5506HIGHLuxion KeyShot Viewer KSP File Parsing Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-13383HIGHWatchGuard Firebox ikestubd Out of Bounds Write VulnerabilityEPSS 0.7%CVE-2018-10882MEDIUMA flaw was found in the Linux kernel's ext4 filesystem. A local user can cause an out-of-bound write in in fs/jbd2/transaction.c code, a denEPSS 0.7%CVE-2026-50161CRITICALlibre: Integer overflow in websock_decode() masked frame length check leads to heap buffer overflowEPSS 0.7%CVE-2024-43091CRITICALIn filterMask of SkEmbossMaskFilter.cpp, there is a possible out of bounds write due to an integer overflow. This could lead to remote code EPSS 0.7%CVE-2022-32947HIGHThe issue was addressed with improved memory handling. This issue is fixed in iOS 16.1 and iPadOS 16, macOS Ventura 13, watchOS 9.1. An app EPSS 0.7%CVE-2022-34485CRITICALMozilla developers Bryce Seager van Dyk and the Mozilla Fuzzing Team reported potential vulnerabilities present in Firefox 101. Some of thesEPSS 0.7%CVE-2022-3398HIGHOMRON CX-Programmer Out-of-bounds WriteEPSS 0.7%CVE-2022-3397HIGHOMRON CX-Programmer Out-of-bounds WriteEPSS 0.7%CVE-2022-3396HIGHOMRON CX-Programmer Out-of-bounds WriteEPSS 0.7%CVE-2026-61674CRITICALFluent Bit: Remote stack buffer overflow in Fluent Bit `out_forward` Secure-Forward `PONG` handlerEPSS 0.7%CVE-2023-28176HIGHMemory safety bugs present in Firefox 110 and Firefox ESR 102.8. Some of these bugs showed evidence of memory corruption and we presume thatEPSS 0.7%CVE-2019-25600HIGHUltraVNC Viewer 1.2.2.4 Denial of Service via Buffer OverflowEPSS 0.7%CVE-2026-84383CRITICALlibheif: Heap buffer overflow in `scale_nearest_neighbor()` via duplicate Alpha planes from nested `iden`/`auxl` itemsEPSS 0.7%