Weaknesses of type CWE-287

2,849 results

Falha na autenticação ou verificação insuficiente de identidade

Quando um usuário, sistema ou aplicação afirma ser alguém (ou algo), o software não valida adequadamente essa identidade antes de conceder acesso ou executar ações sensíveis. O risco é claro: um atacante se passa por outra pessoa e obtém privilégios ou dados que não deveria ter.

Example

Um app que aceita um token JWT sem verificar a assinatura, confiando apenas no nome de usuário no payload. Um atacante modifica o token para elevar seu nível de acesso e o sistema acredita, pois nunca validou a autenticidade real do token.

How to mitigate

Implemente autenticação robusta: valide credenciais em backend seguro, use protocolos padrão (OAuth 2.0, SAML, Kerberos), verifique integridade de tokens (assinatura criptográfica), implemente MFA para operações críticas e nunca confie em dados do cliente sem validação no servidor.

CVE-2020-10918HIGHThis vulnerability allows remote attackers to bypass authentication on affected installations of C-MORE HMI EA9 Firmware version 6.52 touch EPSS 2.7%CVE-2017-7920—An Improper Authentication issue was discovered in ABB VSN300 WiFi Logger Card versions 1.8.15 and prior, and VSN300 WiFi Logger Card for ReEPSS 2.7%CVE-2018-5459—An Improper Authentication issue was discovered in WAGO PFC200 Series 3S CoDeSys Runtime versions 2.3.X and 2.4.X. An attacker can execute dEPSS 2.7%CVE-2018-13804—A vulnerability has been identified in SIMATIC IT LMS (All versions), SIMATIC IT Production Suite (Versions V7.1 < V7.1 Upd3), SIMATIC IT UAEPSS 2.7%CVE-2018-5451—In Philips Alice 6 System version R8.0.2 or prior, when an actor claims to have a given identity, the software does not prove or insufficienEPSS 2.6%CVE-2017-7919—An Improper Authentication issue was discovered in Newport XPS-Cx and XPS-Qx. An attacker may bypass authentication by accessing a specific EPSS 2.6%CVE-2019-18337CRITICALA vulnerability has been identified in Control Center Server (CCS) (All versions < V1.5.0). The Control Center Server (CCS) contains an authEPSS 2.5%CVE-2026-11374CRITICALAccount Takeover via Predictable SSO Ticket GenerationEPSS 2.5%CVE-2022-22576HIGHAn improper authentication vulnerability exists in curl 7.33.0 to and including 7.82.0 which might allow reuse OAUTH2-authenticated connectiEPSS 2.5%CVE-2024-49757HIGHZitadel User Registration Bypass VulnerabilityEPSS 2.5%CVE-2023-22964CRITICALZoho ManageEngine ServiceDesk Plus MSP before 10611, and 13x before 13004, is vulnerable to authentication bypass when LDAP authentication iEPSS 2.5%CVE-2018-0121—A vulnerability in the authentication functionality of the web-based service portal of Cisco Elastic Services Controller Software could alloEPSS 2.5%CVE-2017-7931—In ABB IP GATEWAY 3.39 and prior, by accessing a specific uniform resource locator (URL) on the web server, a malicious user is able to acceEPSS 2.5%CVE-2018-0271—A vulnerability in the API gateway of the Cisco Digital Network Architecture (DNA) Center could allow an unauthenticated, remote attacker toEPSS 2.5%CVE-2025-32975CRITICALQuest KACE Systems Management Appliance (SMA) 13.0.x before 13.0.385, 13.1.x before 13.1.81, 13.2.x before 13.2.183, 14.0.x before 14.0.341 EPSS 2.5%KEVCVE-2019-18315—A vulnerability has been identified in SPPA-T3000 Application Server (All versions < Service Pack R8.2 SP2). An attacker with network accessEPSS 2.5%CVE-2022-48066CRITICALAn issue in the component global.so of Totolink A830R V4.1.2cu.5182 allows attackers to bypass authentication via a crafted cookie.EPSS 2.5%CVE-2017-13995—An Improper Authentication issue was discovered in iniNet Solutions iniNet Webserver, all versions prior to V2.02.0100. The webserver does nEPSS 2.5%CVE-2017-11428HIGHMultiple SAML libraries may allow authentication bypass via incorrect XML canonicalization and DOM traversalEPSS 2.5%CVE-2022-39205CRITICALAccess Control Bypass in OnedevEPSS 2.5%