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-2026-96020HIGHWindows Domain Name Service Remote Code Execution VulnerabilityEPSS 0.7%CVE-2022-0566HIGHIt may be possible for an attacker to craft an email message that causes Thunderbird to perform an out-of-bounds write of one byte when procEPSS 0.7%CVE-2026-43501CRITICALipv6: rpl: reserve mac_len headroom when recompressed SRH growsEPSS 0.7%CVE-2022-43035MEDIUMAn issue was discovered in Bento4 v1.6.0-639. There is a heap-buffer-overflow in AP4_Dec3Atom::AP4_Dec3Atom at Ap4Dec3Atom.cpp, leading to aEPSS 0.7%CVE-2023-34615HIGHAn issue was discovered JSONUtil thru 5.0 allows attackers to cause a denial of service or other unspecified impacts via crafted object thatEPSS 0.7%CVE-2026-16095HIGHShibby Tomato rc setup_conntrack out-of-bounds writeEPSS 0.7%CVE-2026-15545HIGHShibby Tomato apcupsd tomatodata.cgi main out-of-bounds writeEPSS 0.7%CVE-2023-29995HIGHIn NanoMQ v0.15.0-0, a Heap overflow occurs in copyn_utf8_str function of mqtt_parser.cEPSS 0.7%CVE-2023-34617HIGHAn issue was discovered genson thru 1.6 allows attackers to cause a denial of service or other unspecified impacts via crafted object that uEPSS 0.7%CVE-2023-34616HIGHAn issue was discovered pbjson thru 0.4.0 allows attackers to cause a denial of service or other unspecified impacts via crafted object thatEPSS 0.7%CVE-2023-31922HIGHQuickJS commit 2788d71 was discovered to contain a stack-overflow via the component js_proxy_isArray at quickjs.c.EPSS 0.7%CVE-2022-43034MEDIUMAn issue was discovered in Bento4 v1.6.0-639. There is a heap buffer overflow vulnerability in the AP4_BitReader::SkipBits(unsigned int) funEPSS 0.7%CVE-2023-29994HIGHIn NanoMQ v0.15.0-0, Heap overflow occurs in read_byte function of mqtt_code.c.EPSS 0.7%CVE-2022-2044HIGHMOXA NPort 5110 Out-of-bounds WriteEPSS 0.7%CVE-2026-4699HIGHIncorrect boundary conditions in the Layout: Text and Fonts componentEPSS 0.7%CVE-2026-4697HIGHIncorrect boundary conditions in the Audio/Video: Web Codecs componentEPSS 0.7%CVE-2026-4685HIGHIncorrect boundary conditions in the Graphics: Canvas2D componentEPSS 0.7%CVE-2023-51968CRITICALTenda AX1803 v1.0.0.1 contains a stack overflow via the adv.iptv.stballvlans parameter in the function getIptvInfo.EPSS 0.7%CVE-2023-51967CRITICALTenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.stb.port parameter in the function getIptvInfo.EPSS 0.7%CVE-2023-51969CRITICALTenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.city.vlan parameter in the function getIptvInfo.EPSS 0.7%