Weaknesses of type CWE-122

3,195 results

Transbordamento de heap (heap overflow)

Ocorre quando um programa escreve dados além dos limites de um buffer alocado dinamicamente na memória heap, sobrescrevendo dados adjacentes ou metadados do alocador. Isso permite que um atacante corrompa estruturas críticas, execute código arbitrário ou cause travamento da aplicação.

Example

Uma função recebe um tamanho de entrada sem validar e copia para um buffer: `strcpy(heap_buffer, user_input)` sem verificar se user_input cabe. Se o usuário enviar 1000 bytes para um buffer de 256, o overflow sobrescreve estruturas próximas no heap e pode ser explorado para RCE.

How to mitigate

Use funções seguras de cópia (`strncpy`, `strlcpy`), valide e limite o tamanho da entrada antes de copiar, e considere usar linguagens com gerenciamento automático de memória ou ferramentas como AddressSanitizer durante testes para detectar overflows.

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%