Falhas do tipo CWE-401

664 resultados

Fuga de memória - liberação não realizada após uso

Ocorre quando o código aloca memória (heap ou recursos) mas falha em liberá-la quando não é mais necessária. A memória fica presa no processo, reduzindo gradualmente a memória disponível até causar degradação de performance ou crash. É especialmente crítico em serviços que rodam indefinidamente (daemons, APIs, servidores).

Exemplo

Um servidor web que processa requisições sem liberar buffers de conexão fechada. Após milhares de requisições, acumula KB/MB de lixo na memória. Ou uma função que abre arquivo/socket e retorna sem chamar close() em todos os caminhos possíveis (incluindo exceções).

Como mitigar

Use padrões como RAII (Resource Acquisition Is Initialization) em C++, try-finally ou context managers em Python/Java, ou verificadores de vazamento (valgrind, AddressSanitizer). Revise especialmente blocos de exceção e retornos prematuros. Testes de longa duração ajudam a detectar fugas acumulativas.

CVE-2023-34451HIGHCometBFT may duplicate transactions in the mempool's data structuresEPSS 0.9%CVE-2022-43223HIGHopen5gs v2.4.11 was discovered to contain a memory leak in the component ngap-handler.c. This vulnerability allows attackers to cause a DeniEPSS 0.9%CVE-2022-43221HIGHopen5gs v2.4.11 was discovered to contain a memory leak in the component src/upf/pfcp-path.c. This vulnerability allows attackers to cause aEPSS 0.9%CVE-2022-43222HIGHopen5gs v2.4.11 was discovered to contain a memory leak in the component src/smf/pfcp-path.c. This vulnerability allows attackers to cause aEPSS 0.9%CVE-2022-45920HIGHIn Softing uaToolkit Embedded before 1.41, a malformed CreateMonitoredItems request may cause a memory leak.EPSS 0.9%CVE-2026-73550HIGHEnvoy: HTTP/2 Discarded Host Header 200 GB Header-Copy OOM in EnvoyEPSS 0.9%CVE-2020-27755—in SetImageExtent() of /MagickCore/image.c, an incorrect image depth size can cause a memory leak because the code which checks for the propEPSS 0.9%CVE-2020-27753—There are several memory leaks in the MIFF coder in /coders/miff.c due to improper image depth values, which can be triggered by a speciallyEPSS 0.9%CVE-2023-34450LOWCometBFT PeerState JSON serialization deadlockEPSS 0.9%CVE-2023-24511MEDIUMOn affected platforms running Arista EOS with SNMP configured, a specially crafted packet can cause a memory leak in the snmpd process.EPSS 0.8%CVE-2025-1634HIGHIo.quarkus:quarkus-resteasy: memory leak in quarkus resteasy classic when client requests timeoutEPSS 0.8%CVE-2022-22205HIGHJunos OS: SRX Series: An FPC memory leak can occur in an APBR scenarioEPSS 0.8%CVE-2023-3592MEDIUMIn Mosquitto before 2.0.16, a memory leak occurs when clients send v5 CONNECT packets with a will message that contains invalid property typEPSS 0.8%CVE-2025-47935HIGHMulter vulnerable to Denial of Service via memory leaks from unclosed streamsEPSS 0.8%CVE-2023-22410HIGHJunos OS: MX Series with MPC10/MPC11: When Suspicious Control Flow Detection (scfd) is enabled and an attacker is sending specific traffic, this causes a memory leak.EPSS 0.8%CVE-2023-28096MEDIUMOpenSIPS has memory leak in cJSON libEPSS 0.8%CVE-2024-24149MEDIUMA memory leak issue discovered in parseSWF_GLYPHENTRY in libming v0.4.8 allows attackers to cause a denial of service via a crafted SWF fileEPSS 0.8%CVE-2024-24150MEDIUMA memory leak issue discovered in parseSWF_TEXTRECORD in libming v0.4.8 allows attackers to cause a denial of service via a crafted SWF fileEPSS 0.8%CVE-2026-48043MEDIUMnetty-codec-http2: ByteBuf Reference-Count Leak in DelegatingDecompressorFrameListener Leads to Memory ExhaustionEPSS 0.8%CVE-2024-24147MEDIUMA memory leak issue discovered in parseSWF_FILLSTYLEARRAY in libming v0.4.8 allows attackers to cause s denial of service via a crafted SWF EPSS 0.7%