Falhas do tipo CWE-787

5.860 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-2026-58592HIGHLadybird - Web-Reachable Code Execution via Dangling FunctionType Reference in WebAssembly ESM IntegrationEPSS 0.5%CVE-2026-27703HIGHRIOT has an Out-of-Bounds Write in nanoCoAP HandlerEPSS 0.5%CVE-2026-16706HIGHVulnerabilities in IBM AIX and PowerVM VIOSEPSS 0.5%CVE-2026-16887HIGHIBM i is Affected By A Denial of Service Vulnerability DST/SST []EPSS 0.5%CVE-2026-57876HIGHGV-LPC2011/LPC2211 - unauthorized out-of-bounds writing vulnerability (onvif.cgi)EPSS 0.5%CVE-2021-34947HIGHNETGEAR R7800 net-cgi Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 0.5%CVE-2026-95115HIGHBuffer Overflow vulnerability in libwebsockets main 106d542c allows a remote attacker to cause a denial of service via the LEJP JSON parserEPSS 0.5%CVE-2026-112415MEDIUMAn out-of-bounds write was addressed with improved input validation. This issue is fixed in iOS 26.7.2 and iPadOS 26.7.2, iOS 27.2 and iPadOEPSS 0.5%CVE-2026-42370CRITICALGeoVision GV-VMS V20 WebCam Server Login stack overflow vulnerabilityEPSS 0.5%CVE-2026-17425HIGHVulnerabilities in IBM AIX and PowerVM VIOSEPSS 0.5%CVE-2026-16982HIGHIBM i is Affected By Multiple Vulnerabilities in Host ServersEPSS 0.5%CVE-2026-17470MEDIUMIBM i is Affected By Denial of Service Vulnerabilities in Line Printer Daemon [, ]EPSS 0.5%CVE-2026-18846HIGHIBM i is Affected By Multiple Vulnerabilities in Host ServersEPSS 0.5%CVE-2025-64406MEDIUMApache OpenOffice: Possible memory corruption during CSV importEPSS 0.5%CVE-2024-5302HIGHKofax Power PDF PDF File Parsing Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 0.5%CVE-2021-3713—An out-of-bounds write flaw was found in the UAS (USB Attached SCSI) device emulation of QEMU in versions prior to 6.2.0-rc0. The device useEPSS 0.5%CVE-2026-18077HIGHIBM i is Affected By Multiple Vulnerabilities in Simple Mail Transfer ProtocolEPSS 0.5%CVE-2024-5303HIGHKofax Power PDF PSD File Parsing Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 0.5%CVE-2026-17120MEDIUMVulnerabilities in IBM AIX and PowerVM VIOSEPSS 0.5%CVE-2024-6812HIGHIrfanView WSQ File Parsing Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 0.5%