Fallos del tipo CWE-122

3214 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-2026-92368HIGHHeap-Based Buffer Overflow in TeamViewer Session Recording Playback Leads to Remote Code ExecutionEPSS 0.1%CVE-2026-96416MEDIUMHeap-based Buffer Overflow in WiresharkEPSS 0.1%CVE-2026-95388MEDIUMHeap-based Buffer Overflow in WiresharkEPSS 0.1%CVE-2026-42477MEDIUMA heap-based out-of-bounds read vulnerability in RWObj_Reader::read in the OBJ file parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 alloEPSS 0.1%CVE-2026-23719HIGHA vulnerability has been identified in Simcenter Femap (All versions < V2512), Simcenter Nastran (All versions < V2512). The affected applicEPSS 0.1%CVE-2026-44636HIGHlibsixel: integer overflow in encoderEPSS 0.1%CVE-2025-5942MEDIUMHeap Overflow in Netskope Endpoint DLP DriverEPSS 0.1%CVE-2026-76918MEDIUMHeap-based Buffer Overflow in WiresharkEPSS 0.1%CVE-2026-76917MEDIUMHeap-based Buffer Overflow in WiresharkEPSS 0.1%CVE-2025-55286HIGHz2d OOB drawing with new multi-sample anti-aliasing could lead to invalid memory access and corruptionEPSS 0.1%CVE-2025-20735HIGHIn wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilegEPSS 0.1%CVE-2025-20733HIGHIn wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilegEPSS 0.1%CVE-2025-20728HIGHIn wlan STA driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privileEPSS 0.1%CVE-2026-96423MEDIUMHeap-based Buffer Overflow in WiresharkEPSS 0.1%CVE-2026-40106MEDIUMWazuh: Heap-based Buffer Overflow in syscheck Registry Wildcard Expansion (LPE / DoS)EPSS 0.1%CVE-2026-20501HIGHIn vdec, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no addEPSS 0.1%CVE-2026-19694MEDIUMHeap-based Buffer Overflow in WiresharkEPSS 0.1%CVE-2026-31853MEDIUMImageMagick has a heap buffer over-write on 32-bit systems in SFW decoderEPSS 0.1%CVE-2026-5448LOW1-2 Byte Buffer Overflow in wolfSSL_X509_notAfter/notBeforeEPSS 0.1%CVE-2026-15173MEDIUMHeap-based Buffer Overflow in WiresharkEPSS 0.1%