Weaknesses of type CWE-787

5,847 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-2026-54627CRITICALSAIL: Heap out-of-bounds write in SAIL PSD decoder (Bitmap mode ignores depth)EPSS 0.8%CVE-2026-87121CRITICALOut-of-bounds write in lwIP TCP/IP Stack MQTT Client ApplicationEPSS 0.8%CVE-2026-54626CRITICALSAIL: Heap out-of-bounds write in SAIL TGA decoder (indexed-RLE bpp/stride mismatch)EPSS 0.8%CVE-2024-57581CRITICALTenda AC18 V15.03.05.19 was discovered to contain a stack overflow via the firewallEn parameter in the formSetFirewallCfg function.EPSS 0.8%CVE-2022-44755CRITICALHCL Notes is susceptible to a stack based buffer overflow vulnerability in lasr.dll in Micro Focus KeyViewEPSS 0.8%CVE-2024-57582CRITICALTenda AC18 V15.03.05.19 was discovered to contain a stack overflow via the startIP parameter in the formSetPPTPServer function.EPSS 0.8%CVE-2026-17006HIGHVulnerabilities in IBM AIX and PowerVM VIOSEPSS 0.8%CVE-2023-4585HIGHMemory safety bugs fixed in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2EPSS 0.8%CVE-2024-41311HIGHIn Libheif 1.17.6, insufficient checks in ImageOverlay::parse() decoding a heif file containing an overlay image with forged offsets can leaEPSS 0.8%CVE-2024-7973HIGHHeap buffer overflow in PDFium in Google Chrome prior to 128.0.6613.84 allowed a remote attacker to perform an out of bounds memory read viaEPSS 0.8%CVE-2026-58188HIGHApache Traffic Server: Memory-safety and limit-bypass errors across experimental pluginsEPSS 0.8%CVE-2023-35110HIGHAn issue was discovered jjson thru 0.1.7 allows attackers to cause a denial of service or other unspecified impacts via crafted object that EPSS 0.8%CVE-2023-34612HIGHAn issue was discovered ph-json thru 9.5.5 allows attackers to cause a denial of service or other unspecified impacts via crafted object thaEPSS 0.8%CVE-2023-48111HIGHTenda AX1803 v1.0.0.1 was discovered to contain a stack overflow via the time parameter in the function saveParentControlInfo . This vulneraEPSS 0.8%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 0.8%CVE-2023-48110HIGHTenda AX1803 v1.0.0.1 was discovered to contain a heap overflow via the urls parameter in the function saveParentControlInfo . This vulnerabEPSS 0.8%CVE-2023-50986HIGHTenda i29 v1.0 V1.0.0.5 was discovered to contain a buffer overflow via the time parameter in the sysLogin function.EPSS 0.8%CVE-2026-33636HIGHLIBPNG has ARM NEON Palette Expansion Out-of-Bounds Read on AArch64EPSS 0.8%CVE-2025-5943HIGHMicroDicom DICOM Viewer Out-of-bounds WriteEPSS 0.8%CVE-2018-10881MEDIUMA flaw was found in the Linux kernel's ext4 filesystem. A local user can cause an out-of-bound access in ext4_get_group_info function, a denEPSS 0.8%