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-2026-85440CRITICALMOOS core-moos through 10.4.0 MOOSDB Pre-Authentication Heap Overflow via Negative Packet LengthEPSS 1.0%CVE-2026-26740HIGHBuffer Overflow vulnerability in giflib v.5.2.2 allows a remote attacker to cause a denial of service via the EGifGCBToExtension overwritingEPSS 1.0%CVE-2024-24543CRITICALBuffer Overflow vulnerability in the function setSchedWifi in Tenda AC9 v.3.0, firmware version v.15.03.06.42_multi allows a remote attackerEPSS 1.0%CVE-2023-46536HIGHTP-LINK TL-WR886N V7.0_3.0.14_Build_221115_Rel.56908n.bin was discovered to contain a stack overflow via the function chkRegVeriRegister.EPSS 1.0%CVE-2023-46526HIGHTP-LINK TL-WR886N V7.0_3.0.14_Build_221115_Rel.56908n.bin was discovered to contain a stack overflow via the function resetCloudPwdRegister.EPSS 1.0%CVE-2023-46535HIGHTP-LINK TL-WR886N V7.0_3.0.14_Build_221115_Rel.56908n.bin was discovered to contain a stack overflow via the function getResetVeriRegister.EPSS 1.0%CVE-2023-46525HIGHTP-LINK TL-WR886N V7.0_3.0.14_Build_221115_Rel.56908n.bin was discovered to contain a stack overflow via the function loginRegister.EPSS 1.0%CVE-2023-46520HIGHTP-LINK TL-WR886N V7.0_3.0.14_Build_221115_Rel.56908n.bin was discovered to contain a stack overflow via the function uninstallPluginReqHandEPSS 1.0%CVE-2023-46534HIGHTP-LINK TL-WR886N V7.0_3.0.14_Build_221115_Rel.56908n.bin was discovered to contain a stack overflow via the function modifyAccPwdRegister.EPSS 1.0%CVE-2023-46537HIGHTP-LINK TL-WR886N V7.0_3.0.14_Build_221115_Rel.56908n.bin was discovered to contain a stack overflow via the function getRegVeriRegister.EPSS 1.0%CVE-2023-46540HIGHTOTOLINK X2000R Gh v1.0.0-B20230221.0948.web was discovered to contain a stack overflow via the function formNtp.EPSS 1.0%CVE-2023-46523HIGHTP-LINK TL-WR886N V7.0_3.0.14_Build_221115_Rel.56908n.bin was discovered to contain a stack overflow via the function upgradeInfoRegister.EPSS 1.0%CVE-2023-46544HIGHTOTOLINK X2000R Gh v1.0.0-B20230221.0948.web was discovered to contain a stack overflow via the function formWirelessTbl.EPSS 1.0%CVE-2023-46538HIGHTP-LINK TL-WR886N V7.0_3.0.14_Build_221115_Rel.56908n.bin was discovered to contain a stack overflow via the function chkResetVeriRegister.EPSS 1.0%CVE-2023-46543HIGHTOTOLINK X2000R Gh v1.0.0-B20230221.0948.web was discovered to contain a stack overflow via the function formWlSiteSurvey.EPSS 1.0%CVE-2023-46542HIGHTOTOLINK X2000R Gh v1.0.0-B20230221.0948.web was discovered to contain a stack overflow via the function formMeshUploadConfig.EPSS 1.0%CVE-2023-46539HIGHTP-LINK TL-WR886N V7.0_3.0.14_Build_221115_Rel.56908n.bin was discovered to contain a stack overflow via the function registerRequestHandle.EPSS 1.0%CVE-2023-46541HIGHTOTOLINK X2000R Gh v1.0.0-B20230221.0948.web was discovered to contain a stack overflow via the function formIpv6Setup.EPSS 1.0%CVE-2023-46521HIGHTP-LINK TL-WR886N V7.0_3.0.14_Build_221115_Rel.56908n.bin was discovered to contain a stack overflow via the function RegisterRegister.EPSS 1.0%CVE-2023-32874CRITICALIn Modem IMS Stack, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution with no EPSS 1.0%