Falhas do tipo CWE-787
5.846 resultadosEscrita fora dos limites de memória
Ocorre quando um programa escreve dados em um endereço de memória fora da área alocada para um buffer ou variável. O código não valida o tamanho ou índice antes de gravar, permitindo sobrescrita de dados adjacentes, corrupção de estruturas críticas ou execução de código arbitrário.
Exemplo
Um formulário web que copia dados do usuário para um buffer de 256 bytes sem validar o tamanho da entrada. Se o atacante envia 500 bytes, a escrita transborda e sobrescreve a pilha, podendo hijackear o endereço de retorno da função.
Como mitigar
Use funções seguras de cópia (strncpy, strlcpy ao invés de strcpy; memcpy com tamanho máximo explícito) e sempre valide comprimento e índices antes de escrever. Em linguagens modernas, prefira estruturas com bounds-checking automático (arrays em Java, Rust, etc).
CVE-2022-45337HIGHTenda TX9 Pro v22.03.02.10 was discovered to contain a stack overflow via the list parameter at /goform/SetIpMacBind.EPSS 0.9%CVE-2025-53367HIGHDjVuLibre OOB-Write Vulnerability in MMRDecoderEPSS 0.9%CVE-2023-25219CRITICALTenda AC5 US_AC5V1.0RTL_V15.03.06.28 was discovered to contain a stack overflow via the fromDhcpListClient function. This vulnerability alloEPSS 0.9%CVE-2023-25217CRITICALTenda AC5 US_AC5V1.0RTL_V15.03.06.28 was discovered to contain a stack overflow via the formWifiBasicSet function. This vulnerability allowsEPSS 0.9%CVE-2023-25211CRITICALTenda AC5 US_AC5V1.0RTL_V15.03.06.28 was discovered to contain a stack overflow via the R7WebsSecurityHandler function. This vulnerability aEPSS 0.9%CVE-2023-25214CRITICALTenda AC5 US_AC5V1.0RTL_V15.03.06.28 was discovered to contain a stack overflow via the setSchedWifi function. This vulnerability allows attEPSS 0.9%CVE-2023-25210CRITICALTenda AC5 US_AC5V1.0RTL_V15.03.06.28 was discovered to contain a stack overflow via the fromSetSysTime function. This vulnerability allows aEPSS 0.9%CVE-2023-25215CRITICALTenda AC5 US_AC5V1.0RTL_V15.03.06.28 was discovered to contain a stack overflow via the saveParentControlInfo function. This vulnerability aEPSS 0.9%CVE-2023-25213CRITICALTenda AC5 US_AC5V1.0RTL_V15.03.06.28 was discovered to contain a stack overflow via the check_param_changed function. This vulnerability allEPSS 0.9%CVE-2023-25216CRITICALTenda AC5 US_AC5V1.0RTL_V15.03.06.28 was discovered to contain a stack overflow via the formSetFirewallCfg function. This vulnerability alloEPSS 0.9%CVE-2023-25212CRITICALTenda AC5 US_AC5V1.0RTL_V15.03.06.28 was discovered to contain a stack overflow via the fromSetWirelessRepeat function. This vulnerability aEPSS 0.9%CVE-2022-43285HIGHNginx NJS v0.7.4 was discovered to contain a segmentation violation in njs_promise_reaction_job. NOTE: the vendor disputes the significance EPSS 0.9%CVE-2023-49417CRITICALTOTOLink A7000R V9.1.0u.6115_B20201022 has a stack overflow vulnerability via setOpModeCfg.EPSS 0.9%CVE-2022-31737CRITICALA malicious webpage could have caused an out-of-bounds write in WebGL, leading to memory corruption and a potentially exploitable crash. ThiEPSS 0.9%CVE-2023-51963CRITICALTenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.city.vlan parameter in the function setIptvInfo.EPSS 0.9%CVE-2023-20872HIGHVMware Workstation and Fusion contain an out-of-bounds read/write vulnerability in SCSI CD/DVD device emulation.EPSS 0.9%CVE-2023-34623HIGHAn issue was discovered jtidy thru r938 allows attackers to cause a denial of service or other unspecified impacts via crafted object that uEPSS 0.9%CVE-2022-45507HIGHTenda W30E V1.0.1.25(633) was discovered to contain a stack overflow via the editNameMit parameter at /goform/editFileName.EPSS 0.9%CVE-2024-32760MEDIUMNGINX HTTP/3 QUIC vulnerabilityEPSS 0.9%CVE-2021-27623MEDIUMSAP Internet Graphics Service, versions - 7.20,7.20EXT,7.53,7.20_EX2,7.81, allows an unauthenticated attacker after retrieving an existing sEPSS 0.9%