Falhas do tipo CWE-787
5.843 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-2022-1737CRITICALPyramid Solutions EtherNet/IP Adapter Development Kit Out-of-bound WriteEPSS 1.3%CVE-2026-16870HIGHMultiple Security Vulnerabilities in Snowflake libsnowflakeclientEPSS 1.3%CVE-2022-40659HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of NIKON NIS-Elements Viewer 1.2100.1483.0. UEPSS 1.3%CVE-2022-40657HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of NIKON NIS-Elements Viewer 1.2100.1483.0. UEPSS 1.3%CVE-2021-24042CRITICALThe calling logic for WhatsApp for Android prior to v2.21.23, WhatsApp Business for Android prior to v2.21.23, WhatsApp for iOS prior to v2.EPSS 1.3%CVE-2022-22610HIGHA memory corruption issue was addressed with improved state management. This issue is fixed in macOS Monterey 12.3, Safari 15.4, watchOS 8.5EPSS 1.3%CVE-2023-46542HIGHTOTOLINK X2000R Gh v1.0.0-B20230221.0948.web was discovered to contain a stack overflow via the function formMeshUploadConfig.EPSS 1.3%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 1.3%CVE-2023-46544HIGHTOTOLINK X2000R Gh v1.0.0-B20230221.0948.web was discovered to contain a stack overflow via the function formWirelessTbl.EPSS 1.3%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 1.3%CVE-2023-46543HIGHTOTOLINK X2000R Gh v1.0.0-B20230221.0948.web was discovered to contain a stack overflow via the function formWlSiteSurvey.EPSS 1.3%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 1.3%CVE-2023-46540HIGHTOTOLINK X2000R Gh v1.0.0-B20230221.0948.web was discovered to contain a stack overflow via the function formNtp.EPSS 1.3%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 1.3%CVE-2023-46541HIGHTOTOLINK X2000R Gh v1.0.0-B20230221.0948.web was discovered to contain a stack overflow via the function formIpv6Setup.EPSS 1.3%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 1.3%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 1.3%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 1.3%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 1.3%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 1.3%