Fallos del tipo CWE-287

2803 resultados

Autenticação inadequada ou ausente

A aplicação não valida ou valida de forma insuficiente a identidade de quem tenta acessá-la. Quando um usuário diz ser quem é, o sistema acredita sem verificar corretamente, permitindo que atacantes se façam passar por outros usuários ou contas legítimas.

Ejemplo

Um sistema que aceita login apenas com nome de usuário, sem senha. Ou uma API que confia no header 'User-ID' enviado pelo cliente sem validar se aquele usuário realmente existe ou tem sessão ativa. Um atacante simplesmente altera o header e acessa dados de outra conta.

Cómo mitigar

Implemente autenticação robusta: exija múltiplos fatores (senha forte + MFA), valide credenciais contra base de dados segura, use sessões com token assinado e com expiração, nunca confie em dados enviados pelo cliente como prova de identidade. Revise regularmente logs de acesso para detectar abusos.

CVE-2017-12225—A vulnerability in the web functionality of the Cisco Prime LAN Management Solution could allow an authenticated, remote attacker to hijack EPSS 2.0%CVE-2020-27780—A flaw was found in Linux-Pam in versions prior to 1.5.1 in the way it handle empty passwords for non-existing users. When the user doesn't EPSS 2.0%CVE-2021-38161—Not validating origin TLS certificateEPSS 1.9%CVE-2026-53595CRITICALFreeScout vulnerable to anonymous account takeover via /user-setup empty invite_hash on MySQLEPSS 1.9%CVE-2024-23465HIGHSolarWinds Access Rights Manager (ARM) ChangeHumster Exposed Dangerous Method Authentication Bypass VulnerabilityEPSS 1.9%CVE-2021-26637HIGHSiHAS Improper Authentication vulnerabilityEPSS 1.9%CVE-2024-28992HIGHSolarWinds Access Rights Manager Directory Traversal and Information Disclosure VulnerabilityEPSS 1.9%CVE-2021-32637CRITICALAuthentication bypassed with malformed request URIEPSS 1.9%CVE-2021-36369HIGHAn issue was discovered in Dropbear through 2020.81. Due to a non-RFC-compliant check of the available authentication methods in the client-EPSS 1.9%CVE-2017-14006—GE Xeleris versions 1.0,1.1,2.1,3.0,3.1, medical imaging systems, all current versions are affected, these devices use default or hard-codedEPSS 1.9%CVE-2017-14004—GE GEMNet License server (EchoServer) all current versions are affected these devices use default or hard-coded credentials. Successful explEPSS 1.9%CVE-2021-22764MEDIUMA CWE-287: Improper Authentication vulnerability exists in PowerLogic PM55xx, PowerLogic PM8ECC, PowerLogic EGX100 and PowerLogic EGX300 (seEPSS 1.9%CVE-2021-21308MEDIUMImproper session management for soft logoutEPSS 1.9%CVE-2017-12695—An Improper Authentication issue was discovered in General Motors (GM) and Shanghai OnStar (SOS) SOS iOS Client 7.1. Successful exploitationEPSS 1.9%CVE-2021-43999—Improper validation of SAML responsesEPSS 1.8%CVE-2026-114509CRITICALLaravel TokenGuard authentication bypass through non-string API credentialsEPSS 1.8%CVE-2017-6047—Detcon Sitewatch Gateway, all versions without cellular, Passwords are presented in plaintext in a file that is accessible without authenticEPSS 1.8%CVE-2018-0087—A vulnerability in the FTP server of the Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to log in to theEPSS 1.8%CVE-2018-15721—The XMPP server in Logitech Harmony Hub before version 4.15.206 is vulnerable to authentication bypass via a crafted XMPP request. Remote atEPSS 1.8%CVE-2025-30282CRITICALColdFusion | Improper Authentication (CWE-287)EPSS 1.8%