Falhas do tipo CWE-190

1.657 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-2023-40474HIGHGStreamer MXF File Parsing Integer Overflow Remote Code Execution VulnerabilityEPSS 1.9%CVE-2023-40475HIGHGStreamer MXF File Parsing Integer Overflow Remote Code Execution VulnerabilityEPSS 1.9%CVE-2026-7838HIGHUltraVNC viewer heap buffer overflow via integer overflow in RFB connection-failure reason lengthEPSS 1.9%CVE-2021-27435HIGHARM mbed Integer Overflow or WraparoundEPSS 1.9%CVE-2021-3475—There is a flaw in OpenEXR in versions before 3.0.0-beta. An attacker who can submit a crafted file to be processed by OpenEXR could cause aEPSS 1.8%CVE-2021-3476—A flaw was found in OpenEXR's B44 uncompression functionality in versions before 3.0.0-beta. An attacker who is able to submit a crafted filEPSS 1.8%CVE-2021-3474—There's a flaw in OpenEXR in versions before 3.0.0-beta. A crafted input file that is processed by OpenEXR could cause a shift overflow in tEPSS 1.8%CVE-2024-1580MEDIUMInteger overflow in VideoLAN dav1dEPSS 1.8%CVE-2025-21172HIGH.NET and Visual Studio Remote Code Execution VulnerabilityEPSS 1.8%CVE-2026-8631CRITICALHP Linux Imaging and Printing Software – Potential Escalation of Privilege and Arbitrary Code ExecutionEPSS 1.8%CVE-2024-21372HIGHWindows OLE Remote Code Execution VulnerabilityEPSS 1.8%CVE-2020-10063MEDIUMRemote Denial of Service in CoAP Option Parsing Due To Integer OverflowEPSS 1.8%CVE-2021-21704MEDIUMMultiple vulnerabilities in Firebird client extensionEPSS 1.8%CVE-2021-22156CRITICALAn integer overflow vulnerability in the calloc() function of the C runtime library of affected versions of BlackBerry® QNX Software DevelopEPSS 1.8%CVE-2024-21428HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.8%CVE-2022-24354HIGHThis vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link AC1750 prior to 1.1.4 BuEPSS 1.8%CVE-2021-27433HIGHARM mbed-ualloc memory library Integer Overflow or WraparoundEPSS 1.8%CVE-2024-38019HIGHMicrosoft Windows Performance Data Helper Library Remote Code Execution VulnerabilityEPSS 1.8%CVE-2023-21803CRITICALWindows iSCSI Discovery Service Remote Code Execution VulnerabilityEPSS 1.8%CVE-2024-21812CRITICALAn integer overflow vulnerability exists in the sopen_FAMOS_read functionality of The Biosig Project libbiosig 2.5.0 and Master Branch (ab0eEPSS 1.8%