Weaknesses of type CWE-681

90 results

Conversão Incorreta Entre Tipos Numéricos

Ocorre quando código converte um número entre tipos (inteiro para byte, long para int, etc.) sem validar se o valor cabe no intervalo permitido pelo tipo destino. O resultado é perda de dados, overflow, underflow ou comportamento imprevisto que pode ser explorado para contornar validações de segurança.

Example

Um sistema valida que um user ID é positivo (int de 32 bits), mas depois converte para short (16 bits) sem verificar. Um ID como 40000 vira negativo após a conversão, burlando lógica de autorização que assume IDs negativos como inválidos.

How to mitigate

Sempre validar o intervalo antes de converter entre tipos numéricos; usar bibliotecas que fazem conversão segura (com exceção em overflow); considerar tipos maiores (long em vez de int) quando o valor vem de entrada externa; adicionar testes unitários que cobrem limites numéricos.

CVE-2026-26178HIGHWindows Advanced Rasterization Platform Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2026-82522MEDIUMlibjxl < 0.12.0 Container Box Parser Integer Underflow via 32-bit Size TruncationEPSS 0.4%CVE-2026-88366HIGHNanoSVG commit 239e102ec contains an incorrect numeric conversion vulnerability in nsvg__pathArcTo() when parsing SVG arc commands. A speciaEPSS 0.4%CVE-2026-6426MEDIUMQemu-kvm: vhost inflight migration vmstate integer type mismatch causes out-of-bounds accessEPSS 0.4%CVE-2026-19879MEDIUMIo.undertow/undertow: undertow: http response header integrity issue due to character truncationEPSS 0.4%CVE-2026-88368HIGHNanoSVG commit 239e102ec contains an incorrect numeric conversion vulnerability in the rasterizer's nsvg__addActive() function. A specially EPSS 0.4%CVE-2026-21688HIGHiccDEV has Type Confusion in SIccCalcOp::ArgsPushed() at IccProfLib/IccMpeCalc.cppEPSS 0.4%CVE-2026-21693HIGHiccDEV has Type Confusion in CIccSegmentedCurveXml::ToXml() at IccXML/IccLibXML/IccMpeXml.cppEPSS 0.4%CVE-2026-118769CRITICALBotan: Integer overflow when reporting block size in FFI can cause memory corruptionEPSS 0.4%CVE-2026-83872HIGHWindows TCP/IP Local Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2026-114654MEDIUMBSON output corruption via out-of-range binary subtype bypassing UUID and OldBinary guardsEPSS 0.3%CVE-2026-34945LOWWasmtime leaks host data with 64-bit tables and WinchEPSS 0.3%CVE-2026-50402HIGHNTFS Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2025-71002MEDIUMA floating-point exception (FPE) in the flow.column_stack component of OneFlow v0.9.0 allows attackers to cause a Denial of Service (DoS) viEPSS 0.3%CVE-2026-84963MEDIUMSilent field truncation via unchecked int cast of huge JSON string values in JSON-to-BSON parserEPSS 0.3%CVE-2026-107224MEDIUMExcelize: A Zip64 uncompressed-size of 2^63 panics OpenFile/OpenReaderEPSS 0.3%CVE-2026-9143MEDIUMIncorrect Conversion between Numeric Types in NI grpc-device due to missing range checks in CodeGenEPSS 0.3%CVE-2022-0322—A flaw was found in the sctp_make_strreset_req function in net/sctp/sm_make_chunk.c in the SCTP network protocol in the Linux kernel with a EPSS 0.3%CVE-2026-88367MEDIUMNanoSVG 239e102ec contains an incorrect numeric conversion vulnerability in nsvg__curveDivs() during SVG stroke rasterization. A specially cEPSS 0.3%CVE-2026-4931MEDIUMCVE-2026-4931EPSS 0.3%