Fallos del tipo CWE-787
5143 resultadosEscrita fora dos limites de memória
Ocorre quando um programa escreve dados em uma posição de memória fora do intervalo alocado para um buffer, array ou estrutura. O atacante aproveita para sobrescrever dados adjacentes (variáveis, ponteiros, pilha de retorno), alterando o comportamento da aplicação ou assumindo controle total do sistema.
Ejemplo
Um programa lê 256 bytes de entrada do usuário e copia para um buffer de 64 bytes sem validação. O atacante envia 300 bytes, que transbordam o buffer e sobrescrevem o endereço de retorno na pilha, permitindo execução de código arbitrário.
Cómo mitigar
Sempre validar tamanho de entrada contra o limite do buffer antes de copiar (usar strncpy, snprintf em vez de strcpy, sprintf). Em linguagens modernas, usar estruturas bounds-checked (Rust, C# arrays) ou linters que detectem padrões perigosos.
CVE-2022-28550CRITICALMatthias-Wandel/jhead jhead 3.06 is vulnerable to Buffer Overflow via shellescape(), jhead.c, jhead. jhead copies strings to a stack buffer EPSS 1.1%CVE-2024-7532HIGHOut of bounds memory access in ANGLE in Google Chrome prior to 127.0.6533.99 allowed a remote attacker to potentially exploit heap corruptioEPSS 1.1%CVE-2023-33673CRITICALTenda AC8V4.0-V16.03.34.06 was discovered to contain a stack overflow via the firewallEn parameter in the formSetFirewallCfg function.EPSS 1.1%CVE-2022-3040HIGHUse after free in Layout in Google Chrome prior to 105.0.5195.52 allowed a remote attacker to potentially exploit heap corruption via a crafEPSS 1.1%CVE-2023-33670CRITICALTenda AC8V4.0-V16.03.34.06 was discovered to contain a stack overflow via the time parameter in the sub_4a79ec function.EPSS 1.1%CVE-2022-22049HIGHWindows Client Server Run-time Subsystem (CSRSS) Elevation of Privilege VulnerabilityEPSS 1.1%CVE-2021-3630—An out-of-bounds write vulnerability was found in DjVuLibre in DJVU::DjVuTXT::decode() in DjVuText.cpp via a crafted djvu file which may leaEPSS 1.1%CVE-2023-52159HIGHA stack-based buffer overflow vulnerability in gross 0.9.3 through 1.x before 1.0.4 allows remote attackers to trigger a denial of service (EPSS 1.1%CVE-2017-16747—An Out-of-bounds Write issue was discovered in Delta Electronics Delta Industrial Automation Screen Editor, Version 2.00.23.00 or prior. SpeEPSS 1.1%CVE-2023-34624HIGHAn issue was discovered htmlcleaner thru = 2.28 allows attackers to cause a denial of service or other unspecified impacts via crafted objecEPSS 1.0%CVE-2022-42827HIGHAn out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.7.1 and iPadOS 15.7.1, iOS 16.1 and EPSS 1.0%KEVCVE-2024-54534HIGHThe issue was addressed with improved memory handling. This issue is fixed in Safari 18.2, iOS 18.2 and iPadOS 18.2, iPadOS 17.7.6, macOS SeEPSS 1.0%CVE-2022-26769HIGHA memory corruption issue was addressed with improved input validation. This issue is fixed in Security Update 2022-004 Catalina, macOS MontEPSS 1.0%CVE-2023-47004HIGHBuffer Overflow vulnerability in Redis RedisGraph v.2.x through v.2.12.8 and fixed in v.2.12.9 allows an attacker to execute arbitrary code EPSS 1.0%CVE-2023-24098HIGHTrendNet Wireless AC Easy-Upgrader TEW-820AP v1.0R, firmware version 1.01.B01 was discovered to contain a stack overflow via the submit-url EPSS 1.0%CVE-2023-24097HIGHTrendNet Wireless AC Easy-Upgrader TEW-820AP v1.0R, firmware version 1.01.B01 was discovered to contain a stack overflow via the submit-url EPSS 1.0%CVE-2021-20986HIGHHilscher: Denial of Service vulnerability in PROFINET IO DeviceEPSS 1.0%CVE-2021-22788HIGHA CWE-787: Out-of-bounds Write vulnerability exists that could cause denial of service when an attacker sends a specially crafted HTTP requeEPSS 1.0%CVE-2023-1220HIGHHeap buffer overflow in UMA in Google Chrome prior to 111.0.5563.64 allowed a remote attacker who had compromised the renderer process to poEPSS 1.0%CVE-2026-8461HIGHHeap out-of-bounds write via odd slice_height in FFmpeg MagicYUV decoderEPSS 1.0%