Fallos del tipo CWE-122

3751 resultados

Estouro de heap

É quando o código escreve dados além dos limites de um buffer alocado no heap (memória dinâmica), sobrescrevendo dados de outras estruturas adjacentes. Esse estouro pode corromper metadados do heap, variáveis vizinhas ou objetos do programa, permitindo execução de código arbitrário ou negação de serviço.

Ejemplo

Um servidor web recebe uma string de tamanho arbitrário e a copia para um buffer de 256 bytes sem validar o comprimento (ex: strcpy em C). Se o atacante enviar 500 bytes, o restante escreve além da zona alocada, corrompendo estruturas próximas e potencialmente ganhando controle do fluxo.

Cómo mitigar

Use funções seguras (strncpy, strlcpy, snprintf em C) que respeitam limites de tamanho; valide e sanitize entrada do usuário antes de copiar; ative proteções do SO (ASLR, DEP/NX); use linguagens de memória segura quando possível; aplique verificações de limites em loops de cópia.

CVE-2025-51089MEDIUMTenda AC8V4 V16.03.34.06` was discovered to contain heap overflow at /goform/GetParentControlInfo.The manipulation of the argument `mac` leaEPSS 9.0%CVE-2021-34583HIGHCODESYS V2 web server: crafted requests could trigger a heap-based buffer overflow (DoS)EPSS 8.8%CVE-2018-1123LOWprocps-ng before version 3.3.15 is vulnerable to a denial of service in ps via mmap buffer overflow. Inbuilt protection in ps maps a guard pEPSS 8.7%CVE-2019-14896HIGHA heap-based buffer overflow vulnerability was found in the Linux kernel, version kernel-2.6.32, in Marvell WiFi chip driver. A remote attacEPSS 8.7%CVE-2025-53766CRITICALGDI+ Remote Code Execution VulnerabilityEPSS 8.5%CVE-2021-21077HIGHAdobe Animate heap-based overflow vulnerabilityEPSS 8.3%CVE-2019-8274—UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer offer handler, which can potentiallyEPSS 8.3%CVE-2019-8273—UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer request handler, which can potentialEPSS 8.3%CVE-2019-8271—UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer handler, which can potentially resulEPSS 8.3%CVE-2021-28629HIGHAdobe Animate heap corruption vulnerability could lead to arbitrary code executionEPSS 7.8%CVE-2021-28620HIGHAdobe Animate heap corruption vulnerability could lead to arbitrary code executionEPSS 7.8%CVE-2019-14895HIGHA heap-based buffer overflow was discovered in the Linux kernel, all versions 3.x.x and 4.x.x before 4.18.0, in Marvell WiFi chip driver. ThEPSS 7.8%CVE-2021-23157HIGHWECON LeviStudioUEPSS 7.6%CVE-2021-36073HIGHAdobe Bridge SGI File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 7.5%CVE-2021-28624HIGHAdobe Bridge SGI File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 7.2%CVE-2025-20363CRITICALA vulnerability in the web services of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco Secure Firewall Threat DefensEPSS 7.2%CVE-2020-10638—Advantech WebAccess Node, Version 8.4.4 and prior, Version 9.0.0. Multiple heap-based buffer overflow vulnerabilities exist caused by a lackEPSS 7.1%CVE-2018-8793—rdesktop versions up to and including v1.8.3 contain a Heap-Based Buffer Overflow in function cssp_read_tsrequest() that results in a memoryEPSS 7.1%CVE-2018-8800—rdesktop versions up to and including v1.8.3 contain a Heap-Based Buffer Overflow in function ui_clip_handle_data() that results in a memoryEPSS 7.1%CVE-2018-1120LOWA flaw was found affecting the Linux kernel before version 4.17. By mmap()ing a FUSE-backed file onto a process's memory containing command EPSS 7.1%