Weaknesses of type CWE-787

5,846 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-2024-24947HIGHA heap-based buffer overflow vulnerability exists in the Programming Software Connection CurrDir functionality of AutomationDirect P3-550E 1EPSS 0.8%CVE-2019-25628CRITICALDownload Accelerator Plus DAP 10.0.6.0 SEH Buffer OverflowEPSS 0.8%CVE-2023-42443HIGHVyper vulnerable to memory corruption in certain builtins utilizing `msize`EPSS 0.8%CVE-2026-0288HIGHPAN-OS: Buffer Overflow Vulnerabilities in User-ID Terminal Server AgentEPSS 0.8%CVE-2022-3051HIGHHeap buffer overflow in Exosphere in Google Chrome on Chrome OS, Lacros prior to 105.0.5195.52 allowed a remote attacker who convinced a useEPSS 0.8%CVE-2026-67271CRITICALDell PowerStore SDNAS, contains an Out-of-bounds Write vulnerability in SMB/CIFS. An unauthenticated attacker with remote access could potenEPSS 0.8%CVE-2022-44363CRITICALTenda i21 V1.0.0.14(4656) is vulnerable to Buffer Overflow via /goform/setSnmpInfo.EPSS 0.8%CVE-2022-39392MEDIUMWasmtime vulnerable to out of bounds read/write with zero-memory-pages configurationEPSS 0.8%CVE-2021-40226HIGHxpdfreader 4.03 is vulnerable to Buffer Overflow.EPSS 0.8%CVE-2025-1268CRITICALOut-of-bounds vulnerability in EMF Recode processing of Generic Plus PCL6 Printer Driver / Generic Plus UFR II Printer Driver / Generic PlusEPSS 0.8%CVE-2022-45766CRITICALHardcoded credentials in Global Facilities Management Software (GFMS) Version 3 software distributed by Key Systems Management permits remotEPSS 0.8%CVE-2023-24094HIGHAn issue in the bridge2 component of MikroTik RouterOS v6.40.5 allows attackers to cause a Denial of Service (DoS) via crafted packets.EPSS 0.8%CVE-2026-73514HIGHPostGIS address_standardizer Out-of-Bounds Write via standardize_address()EPSS 0.8%CVE-2026-43810CRITICALThe issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOEPSS 0.8%CVE-2026-43803CRITICALAn out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 anEPSS 0.8%CVE-2025-20654CRITICALIn wlan service, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote code execution with no EPSS 0.8%CVE-2026-78524HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 0.8%CVE-2023-22415HIGHJunos OS: MX Series and SRX Series: The flow processing daemon (flowd) will crash when specific H.323 packets are receivedEPSS 0.8%CVE-2023-7244CRITICALEthercat Zeek Plugin Out-of-bounds WriteEPSS 0.8%CVE-2023-7243CRITICALEthercat Zeek Plugin Out-of-bounds WriteEPSS 0.8%