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-2026-85595CRITICALTraefik before v2.11.55 and v3.0.0 through v3.7.10 Authentication Bypass via digestAuthEPSS 2.5%CVE-2017-7420—An Authentication Bypass (CWE-287) vulnerability in ESMAC (aka Enterprise Server Monitor and Control) in Micro Focus Enterprise Developer anEPSS 2.4%CVE-2017-11430HIGHMultiple SAML libraries may allow authentication bypass via incorrect XML canonicalization and DOM traversalEPSS 2.4%CVE-2020-3361HIGHCisco Webex Meetings and Cisco Webex Meetings Server Token Handling Unauthorized Access VulnerabilityEPSS 2.4%CVE-2026-24898CRITICALOpenEMR has an Unauthenticated MedEx Token DisclosureEPSS 2.4%CVE-2020-3125HIGHCisco Adaptive Security Appliance Software Kerberos Authentication Bypass VulnerabilityEPSS 2.4%CVE-2026-49003CRITICALUnauthenticated RCE Vulnerability in ZTE ZXDU68 S202 V5.0 ProductEPSS 2.4%CVE-2021-43786CRITICALAPI token verification can be bypassedEPSS 2.4%CVE-2024-37152MEDIUMUnauthenticated Access to sensitive settings in Argo CDEPSS 2.3%CVE-2018-1112HIGHglusterfs server before versions 3.10.12, 4.0.2 is vulnerable when using 'auth.allow' option which allows any unauthenticated gluster clientEPSS 2.3%CVE-2022-41912CRITICALcrewjam/saml go library is vulnerable to signature bypass via multiple Assertion elementsEPSS 2.3%CVE-2022-24883HIGHFreeRDP Server authentication might allow invalid credentials to passEPSS 2.3%CVE-2020-7533—CWE-287: Improper Authentication vulnerability exists which could cause the execution of commands on the webserver without authentication whEPSS 2.3%CVE-2026-21891CRITICALZimaOS has Authentication Bypass via System-Level UsernameEPSS 2.3%CVE-2014-0769—Festo CECX-X-(C1/M1) Controller Improper AuthenticationEPSS 2.3%CVE-2022-31020HIGHRemote code execution in Indy's NODE_UPGRADE transactionEPSS 2.3%CVE-2017-9625—An Improper Authentication issue was discovered in Envitech EnviDAS Ultimate Versions prior to v1.0.0.5. The web application lacks proper auEPSS 2.3%CVE-2019-18314—A vulnerability has been identified in SPPA-T3000 Application Server (All versions < Service Pack R8.2 SP2). An attacker with network accessEPSS 2.3%CVE-2021-25315CRITICALsalt-api unauthenticated remote code executionEPSS 2.3%CVE-2017-14000—An Improper Authentication issue was discovered in Ctek SkyRouter Series 4200 and 4400, all versions prior to V6.00.11. By accessing a speciEPSS 2.3%