Falhas do tipo CWE-190

1.956 resultados

Estouro ou Envolvimento de Inteiro

Ocorre quando uma operação aritmética produz um valor que excede o limite máximo (ou mínimo) que o tipo de dado inteiro pode armazenar, causando o valor envolver-se para o lado oposto ou comportamento inesperado. Isso permite que atacantes contornem validações, aloquem memória inadequada, ou causem travamentos ao explorar essa descontinuidade.

Exemplo

Um servidor de upload limita arquivos a 2 GB verificando se size < 2147483648 (INT_MAX). Um atacante envia size=2147483648, que em inteiro de 32 bits assinado vira -2147483648. A validação passa, mas durante a alocação de buffer o sistema trata como valor negativo ou inesperado, causando falha ou bypass de proteção.

Como mitigar

Use tipos inteiros sem sinal (unsigned) ou de maior capacidade (64 bits) quando apropriado; valide entradas contra limites explícitos *antes* de operações aritméticas; utilize funções de verificação de overflow fornecidas pela linguagem ou biblioteca (ex: __builtin_add_overflow em C, SafeInt em .NET); evite conversões implícitas entre tipos.

CVE-2026-2774HIGHInteger overflow in the Audio/Video componentEPSS 0.9%CVE-2023-52389CRITICALUTF32Encoding.cpp in POCO has a Poco::UTF32Encoding integer overflow and resultant stack buffer overflow because Poco::UTF32Encoding::converEPSS 0.9%CVE-2023-38698MEDIUM.eth registrar controller can shorten the duration of registered namesEPSS 0.8%CVE-2021-3933—An integer overflow could occur when OpenEXR processes a crafted file on systems where size_t < 64 bits. This could cause an invalid bytesPeEPSS 0.8%CVE-2021-32491—A flaw was found in djvulibre-3.5.28 and earlier. An integer overflow in function render() in tools/ddjvu via crafted djvu file may lead to EPSS 0.8%CVE-2022-43608HIGHThis vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Canon imageCLASS MF644Cdw 10.03 EPSS 0.8%CVE-2026-20889CRITICALA heap-based buffer overflow vulnerability exists in the x3f_thumb_loader functionality of LibRaw Commit d20315b. A specially crafted maliciEPSS 0.8%CVE-2023-34399CRITICALMercedes-Benz head-unit NTG6 contains functions to import or export profile settings over USB. Some values of this table are serialized archEPSS 0.8%CVE-2024-30021MEDIUMWindows Mobile Broadband Driver Remote Code Execution VulnerabilityEPSS 0.8%CVE-2021-4206—A flaw was found in the QXL display device emulation in QEMU. An integer overflow in the cursor_alloc() function can lead to the allocation EPSS 0.8%CVE-2025-2174MEDIUMlibzvbi conv.c vbi_strndup_iconv_ucs2 integer overflowEPSS 0.8%CVE-2022-21733MEDIUMMemory exhaustion in TensorflowEPSS 0.8%CVE-2022-34481HIGHIn the <code>nsTArray_Impl::ReplaceElementsAt()</code> function, an integer overflow could have occurred when the number of elements to replEPSS 0.8%CVE-2021-41345HIGHStorage Spaces Controller Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2025-14087MEDIUMGlib: glib: buffer underflow in gvariant parser leads to heap corruptionEPSS 0.8%CVE-2023-44709CRITICALPlutoSVG commit 336c02997277a1888e6ccbbbe674551a0582e5c4 and before was discovered to contain an integer overflow via the component plutosvgEPSS 0.8%CVE-2026-63126HIGHWire: Unauthenticated decoder crash via 32-bit length integer overflow in ByteArrayProtoReader32 (incomplete fix of CVE-2026-45799)EPSS 0.8%CVE-2024-40765CRITICALAn Integer-based buffer overflow vulnerability in the SonicOS via IPSec allows a remote attacker in specific conditions to cause Denial of SEPSS 0.8%CVE-2023-36593HIGHMicrosoft Message Queuing (MSMQ) Remote Code Execution VulnerabilityEPSS 0.8%CVE-2023-36582HIGHMicrosoft Message Queuing (MSMQ) Remote Code Execution VulnerabilityEPSS 0.8%