Fallos del tipo CWE-697

103 resultados

Comparação Incorreta

Ocorre quando o código compara valores usando lógica errada — operador inadequado, tipos incompatíveis ou precedência de operadores mal interpretada — levando a decisões de segurança falharem silenciosamente. Um atacante pode contornar validações, autenticação ou verificações de autorização explorando essa lógica defeituosa.

Ejemplo

Um sistema valida senha fazendo `if (input == passwordHash)` em vez de usar função de comparação constante; ou verifica permissão com `if (userRole = 'admin')` (atribuição) em vez de `if (userRole == 'admin')` (comparação), permitindo bypass.

Cómo mitigar

Use operadores de comparação corretos (== vs = vs ===), implemente testes unitários que cobrem casos limítrofes, e para dados sensíveis (senhas, tokens) empregue funções de comparação timing-safe que não vazem informações por tempo de execução.

CVE-2026-56101MEDIUMOpenBSD ieee80211_crypto_tkip.c TKIP MIC Countermeasure Logic Inversion DoSEPSS 0.4%CVE-2023-25673HIGHTensorFlow has Floating Point Exception in TensorListSplit with XLA EPSS 0.4%CVE-2023-25675HIGHTensorFlow has Segfault in Bincount with XLAEPSS 0.4%CVE-2023-27579HIGHTensorFlow has Floating Point Exception in TFLite in conv kernelEPSS 0.4%CVE-2023-25669HIGHTensorFlow has Floating Point Exception in AvgPoolGrad with XLAEPSS 0.4%CVE-2023-25666HIGHTensorFlow has Floating Point Exception in AudioSpectrogram EPSS 0.4%CVE-2026-35040MEDIUMfast-jwt: Stateful RegExp (/g or /y) causes non-deterministic allowed-claim validation (logical DoS)EPSS 0.4%CVE-2026-14617LOWNousResearch hermes-agent Streaming Reasoning Tag Filter stream_consumer.py GatewayStreamConsumer._filter_and_accumulate case sensitivityEPSS 0.4%CVE-2025-47416MEDIUMConsoleFindCommandMatchListEPSS 0.4%CVE-2026-92087HIGH@fastify/auth vulnerable to Authorization Bypass via order-dependent evaluation of composed authEPSS 0.4%CVE-2026-49846HIGHlibks has path traversal in kws HTTP parser via URI segment overflowEPSS 0.3%CVE-2026-91997MEDIUMevolution-api through 2.3.7 Prometheus Metrics IP Allowlist BypassEPSS 0.3%CVE-2026-18664HIGHWrong interpretation of ACL rangesEPSS 0.3%CVE-2026-61795MEDIUMCapsule: hostnameRegexHandler.OnUpdate validates stale (old) Tenant regex, allowing invalid AllowedHostnames regex to bypass webhook validationEPSS 0.3%CVE-2026-14686MEDIUMHdrHistogram Range Check DoubleHistogram.java org.HdrHistogram.DoubleHistogram.recordValue comparisonEPSS 0.3%CVE-2026-65903MEDIUMDOMPurify before 3.4.0 ADD_TAGS Function Bypasses FORBID_TAGSEPSS 0.3%CVE-2026-73258MEDIUMMongoose: Multipart boundary/header scan logic error in mg_http_next_multipartEPSS 0.3%CVE-2026-45569HIGHRoxy-WI: Path-traversal patch in commit d4d10006 is a no-op (tuple-membership bug)EPSS 0.3%CVE-2026-20333HIGHCisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Incorrect Comparison VulnerabilitiesEPSS 0.3%CVE-2026-71855MEDIUMSuricata flow: IPv4/IPv6 hash collision can reuse wrong flow stateEPSS 0.3%