Weaknesses of type CWE-787

5,146 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-2026-27648HIGHweb_webview has an out-of-bounds write vulnerabilityEPSS 0.7%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-2023-51969CRITICALTenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.city.vlan parameter in the function getIptvInfo.EPSS 0.7%CVE-2023-51962CRITICALTenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.stb.mode parameter in the function setIptvInfo.EPSS 0.7%CVE-2023-51967CRITICALTenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.stb.port parameter in the function getIptvInfo.EPSS 0.7%CVE-2022-34424HIGHNetworking OS10, versions 10.5.1.x, 10.5.2.x, and 10.5.3.x contain a vulnerability that could allow an attacker to cause a system crash by rEPSS 0.7%CVE-2024-7695HIGHOut-of-bounds Write VulnerabilityEPSS 0.7%CVE-2025-2474CRITICALVulnerability in PCX Image Codec Impacts QNX Software Development PlatformEPSS 0.7%CVE-2024-5508HIGHLuxion 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-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-2024-5506HIGHLuxion KeyShot Viewer KSP File Parsing Out-Of-Bounds Write Remote Code Execution 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-2022-46881HIGHAn optimization in WebGL was incorrect in some cases, and could have led to memory corruption and a potentially exploitable crash. *Note*: TEPSS 0.7%CVE-2025-5943HIGHMicroDicom DICOM Viewer Out-of-bounds WriteEPSS 0.7%CVE-2026-20664MEDIUMThe issue was addressed with improved memory handling. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visioEPSS 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-2026-27890HIGHFirebird has Pre-Auth DOS when Processing Out of Order CNCT_specific_data SegmentsEPSS 0.7%