Falhas do tipo CWE-787
5.845 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-2023-33672HIGHTenda AC8V4.0-V16.03.34.06 was discovered to contain a stack overflow via the shareSpeed parameter in the fromSetWifiGusetBasic function.EPSS 0.9%CVE-2024-23950HIGHMultiple improper array index validation vulnerabilities exist in the readMSH functionality of libigl v2.5.0. A specially crafted .msh file EPSS 0.9%CVE-2024-23951HIGHMultiple improper array index validation vulnerabilities exist in the readMSH functionality of libigl v2.5.0. A specially crafted .msh file EPSS 0.9%CVE-2023-34308HIGHAshlar-Vellum Graphite VC6 File Parsing Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 0.9%CVE-2024-23949HIGHMultiple improper array index validation vulnerabilities exist in the readMSH functionality of libigl v2.5.0. A specially crafted .msh file EPSS 0.9%CVE-2024-23947HIGHMultiple improper array index validation vulnerabilities exist in the readMSH functionality of libigl v2.5.0. A specially crafted .msh file EPSS 0.9%CVE-2026-63072HIGHHeap Buffer Overflow in CMS Key UnwrappingEPSS 0.9%CVE-2023-29421HIGHAn issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is an out-of-bounds write in bz3_decode_block.EPSS 0.9%CVE-2024-23948HIGHMultiple improper array index validation vulnerabilities exist in the readMSH functionality of libigl v2.5.0. A specially crafted .msh file EPSS 0.9%CVE-2022-46585CRITICALTRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the REMOTE_USER parameter in the get_access (sub_45AC2C) function.EPSS 0.9%CVE-2022-47127CRITICALTenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wrlPwd parameter at /goform/WifiBasicSet.EPSS 0.9%CVE-2022-46594CRITICALTRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the update_file_name parameter in the auto_up_fw (sub_420A04) functEPSS 0.9%CVE-2022-46583CRITICALTRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the reboot_type parameter in the wizard_ipv6 (sub_41C380) function.EPSS 0.9%CVE-2022-47120CRITICALTenda A15 V15.13.07.13 was discovered to contain a stack overflow via the security_5g parameter at /goform/WifiBasicSet.EPSS 0.9%CVE-2022-47124CRITICALTenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wepkey4 parameter at /goform/WifiBasicSet.EPSS 0.9%CVE-2022-46591CRITICALTRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the reject_url parameter in the reject (sub_41BD60) function.EPSS 0.9%CVE-2022-46600CRITICALTRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the wps_sta_enrollee_pin parameter in the action set_sta_enrollee_pEPSS 0.9%CVE-2022-46582CRITICALTRENDnet TEW755AP 1.13B01 was discovered to contain a stack overflow via the login_name parameter in the do_graph_auth (sub_4061E0) functionEPSS 0.9%CVE-2022-47119CRITICALTenda A15 V15.13.07.13 was discovered to contain a stack overflow via the ssid parameter at /goform/WifiBasicSet.EPSS 0.9%CVE-2022-47118CRITICALTenda A15 V15.13.07.13 was discovered to contain a stack overflow via the wepkey1 parameter at /goform/WifiBasicSet.EPSS 0.9%