Weaknesses of type CWE-787

5,155 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-2026-62434MEDIUMPoD: Don't try to reclaim special pagesEPSS 0.5%CVE-2026-10849HIGHHeap out-of-bounds write in Zephyr hawkBit OTA client when terminating server response bodyEPSS 0.5%CVE-2023-42753HIGHKernel: netfilter: potential slab-out-of-bound access due to integer underflowEPSS 0.5%CVE-2022-22088CRITICALInteger Overflow to Buffer Overflow in Bluetooth HOSTEPSS 0.5%CVE-2024-9121HIGHInappropriate implementation in V8 in Google Chrome prior to 129.0.6668.70 allowed a remote attacker to potentially perform out of bounds meEPSS 0.5%CVE-2025-20725HIGHIn ims service, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, ifEPSS 0.5%CVE-2022-46885HIGHMozilla developers Timothy Nikkel, Ashley Hale, and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 105. Some of theEPSS 0.5%CVE-2026-6679HIGHDTLS 1.3 ACK serialization heap buffer overflow via integer truncationEPSS 0.5%CVE-2024-20501HIGHMultiple vulnerabilities in the Cisco AnyConnect VPN server of Cisco Meraki MX and Cisco Meraki Z Series Teleworker Gateway devices could alEPSS 0.5%CVE-2024-20499HIGHMultiple vulnerabilities in the Cisco AnyConnect VPN server of Cisco Meraki MX and Cisco Meraki Z Series Teleworker Gateway devices could alEPSS 0.5%CVE-2023-0137HIGHHeap buffer overflow in Platform Apps in Google Chrome on Chrome OS prior to 109.0.5414.74 allowed an attacker who convinced a user to instaEPSS 0.5%CVE-2026-93451MEDIUMsnappy-java through 1.1.10.8 Buffer Overflow via typed uncompress methodsEPSS 0.5%CVE-2023-0129HIGHHeap buffer overflow in Network Service in Google Chrome prior to 109.0.5414.74 allowed an attacker who convinced a user to install a maliciEPSS 0.5%CVE-2026-19642MEDIUMOut-of-bounds write in the Base64 decoder in Amazon aws-sdk-cppEPSS 0.5%CVE-2026-71263CRITICALFreeModbus LINUXTCP Port Off-by-One Global Buffer Overflow in xMBPortTCPPool()EPSS 0.5%CVE-2024-22254HIGHOut-of-bounds write vulnerabilityEPSS 0.5%CVE-2024-36114HIGHDecompressors can crash the JVM and leak memory content in AircompressorEPSS 0.5%CVE-2026-17636HIGHIBM Financial Transaction Manager (FTM) is Impacted by Multiple VulnerabilitiesEPSS 0.5%CVE-2024-20357MEDIUMA vulnerability in the XML service of Cisco IP Phone firmware could allow an unauthenticated, remote attacker to initiate phone calls on an EPSS 0.5%CVE-2025-41649HIGHWeidmueller: Out-of-Bounds Write Vulnerability in Industrial Ethernet SwitchesEPSS 0.5%