Falhas do tipo CWE-122

3.188 resultados

Estouro de heap

Ocorre quando código escreve mais dados do que o espaço alocado em uma região de memória dinâmica (heap), sobrescrevendo dados adjacentes. Um atacante pode explorar isso para corromper estruturas de dados críticas, contornar proteções de segurança ou executar código arbitrário.

Exemplo

Um servidor web aloca 256 bytes para armazenar um nome de usuário, mas copia 512 bytes de uma requisição sem validação. Os 256 bytes extras sobrescrevem ponteiros ou metadados do heap, permitindo execução de código ou negação de serviço.

Como mitigar

Use funções seguras que respeitam limites (strcpy_s, memcpy com tamanho verificado em runtime). Validar e limitar o tamanho de entrada antes de copiar. Ativar proteções como ASLR, stack canaries e ferramentas de sanitização (AddressSanitizer) em desenvolvimento.

CVE-2020-27251—A heap overflow vulnerability exists within FactoryTalk Linx Version 6.11 and prior. This vulnerability could allow a remote, unauthenticateEPSS 6.8%CVE-2022-2915—A Heap-based Buffer Overflow vulnerability in the SonicWall SMA100 appliance allows a remote authenticated attacker to cause Denial of ServiEPSS 6.7%CVE-2023-28227HIGHWindows Bluetooth Driver Remote Code Execution VulnerabilityEPSS 6.6%CVE-2026-42055CRITICALNGINX ngx_http_proxy_v2_module and ngx_http_grpc_module vulnerabilityEPSS 6.5%CVE-2016-1762HIGHThe xmlNextChar function in libxml2 before 2.9.4 allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crEPSS 6.5%CVE-2022-30650HIGHAdobe InCopy Font Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 6.4%CVE-2022-30658HIGHAdobe InDesign Font Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 6.4%CVE-2022-30661HIGHAdobe InDesign Font Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 6.4%CVE-2022-30654HIGHAdobe InCopy Font Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 6.4%CVE-2020-16010CRITICALHeap buffer overflow in UI in Google Chrome on Android prior to 86.0.4240.185 allowed a remote attacker who had compromised the renderer proEPSS 6.4%KEVCVE-2025-51089MEDIUMTenda AC8V4 V16.03.34.06` was discovered to contain heap overflow at /goform/GetParentControlInfo.The manipulation of the argument `mac` leaEPSS 6.3%CVE-2016-2123HIGHA flaw was found in samba versions 4.0.0 to 4.5.2. The Samba routine ndr_pull_dnsp_name contains an integer wrap problem, leading to an attaEPSS 6.2%CVE-2023-35630HIGHInternet Connection Sharing (ICS) Remote Code Execution VulnerabilityEPSS 6.1%CVE-2021-28608HIGHAdobe After Effects heap corruption vulnerability could lead to arbitrary code executionEPSS 5.9%CVE-2025-60724CRITICALGDI+ Remote Code Execution VulnerabilityEPSS 5.9%CVE-2025-0434HIGHOut of bounds memory access in V8 in Google Chrome prior to 132.0.6834.83 allowed a remote attacker to potentially exploit heap corruption vEPSS 5.9%CVE-2020-8899CRITICALMemory corruption in Quram library when decoding qmg can lead to RCEEPSS 5.9%CVE-2021-36051HIGHXMP Toolkit SDK Buffer Overflow Could Lead To Arbitrary Code ExecutionEPSS 5.8%CVE-2018-16839MEDIUMCurl versions 7.33.0 through 7.61.1 are vulnerable to a buffer overrun in the SASL authentication code that may lead to denial of service.EPSS 5.8%CVE-2021-28610HIGHAdobe After Effects heap corruption vulnerability could lead to arbitrary code executionEPSS 5.7%