Fallos del tipo CWE-122

3195 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-2026-56002HIGHlibXfont2 PCF Font Parsing Heap Buffer OverflowEPSS 0.6%CVE-2026-78156MEDIUMOpen5GS S6a Authentication-Information-Request hss-s6a-path.c hss_ogs_diam_s6a_air_cb heap-based overflowEPSS 0.6%CVE-2026-20864HIGHWindows Connected Devices Platform Service Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2025-62601LOWFastDDS has heap buffer overflow in readString via Manipulated DATA Submessage when DDS Security is enabledEPSS 0.6%CVE-2023-21694MEDIUMWindows Fax Service Remote Code Execution VulnerabilityEPSS 0.6%CVE-2023-4751HIGHHeap-based Buffer Overflow in vim/vimEPSS 0.6%CVE-2026-69512HIGHWindows Spaceport.sys Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2023-27410LOWA vulnerability has been identified in SCALANCE LPE9403 (All versions < V2.1). A heap-based buffer overflow vulnerability was found in the `EPSS 0.6%CVE-2025-30330HIGHIllustrator | Heap-based Buffer Overflow (CWE-122)EPSS 0.6%CVE-2025-34522CRITICALArcserve UDP < 10.2 Pre-Authentication Heap OverflowEPSS 0.6%CVE-2025-22258MEDIUMA heap-based buffer overflow in Fortinet FortiSRA 1.5.0, 1.4.0 through 1.4.2, FortiPAM 1.5.0, 1.4.0 through 1.4.2, 1.3.0 through 1.3.1, 1.2.EPSS 0.6%CVE-2026-32223MEDIUMWindows USB Printing Stack (usbprint.sys) Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2023-41273MEDIUMQTS, QuTS hero, QuTScloudEPSS 0.6%CVE-2025-26639HIGHWindows USB Print Driver Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2025-54910HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 0.6%CVE-2026-91086MEDIUMGPAC MPEG Video Reframer reframe_mpgvid.c mpgviddmx_process heap-based overflowEPSS 0.6%CVE-2025-62673HIGHHeap-based Buffer Overflow Vulnerability in Archer AX53 and AX12EPSS 0.6%CVE-2026-25188HIGHWindows Telephony Service Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2024-3447MEDIUMQemu: sdhci: heap buffer overflow in sdhci_write_dataport()EPSS 0.6%CVE-2026-3549HIGHECH parsing heap buffer overflowEPSS 0.6%