Fallos del tipo CWE-287

2806 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-2021-32753HIGHWeak password in API gateway in EdgeX Foundry Edinburgh, Fuji, Geneva, and Hanoi releases allows remote attackers to obtain authentication token via dictionary-based password attack when OAuth2 authentication method is enabled.EPSS 0.8%CVE-2026-41574CRITICALNhost Vulnerable to Account Takeover via OAuth Email Verification BypassEPSS 0.8%CVE-2024-11186CRITICALOn affected versions of the CloudVision Portal, improper access controls could enable a malicious authenticated user to take broader actions on managed EOS devices than intended. This advisory impacts the Arista CloudVision Portal products when run on-premEPSS 0.8%CVE-2026-63456CRITICALAuthentication bypass via spoofed HTTP headers Orchestrator REST APIEPSS 0.8%CVE-2020-25183HIGHMedtronic MyCareLink Smart Improper AuthenticationEPSS 0.8%CVE-2024-3263CRITICALImproper authentication in YMS VIS ProEPSS 0.8%CVE-2023-46249CRITICALauthentik potential installation takeover when default admin user is deletedEPSS 0.8%CVE-2023-43805HIGHNexkey allows users to bypass authentication of Bull dashboardEPSS 0.8%CVE-2026-12795MEDIUMBerriAI litellm SSO Debug Flow ui_sso.py json.dumps missing authenticationEPSS 0.8%CVE-2023-39196MEDIUMApache Ozone: Missing mutual TLS authentication in one of the service internal Ozone Storage Container Manager endpointsEPSS 0.8%CVE-2026-23813CRITICALAuthentication Bypass in Web Interface allows Unauthenticated Admin Password ResetEPSS 0.8%CVE-2020-14380—An account takeover flaw was found in Red Hat Satellite 6.7.2 onward. A potential attacker with proper authentication to the relevant externEPSS 0.8%CVE-2025-15099MEDIUMsimstudioai sim CRON Secret internal.ts improper authenticationEPSS 0.8%CVE-2018-17926—The product M2M ETHERNET (FW Versions 2.22 and prior, ETH-FW Versions 1.01 and prior) is vulnerable in that an attacker can upload a malicioEPSS 0.8%CVE-2025-3268MEDIUMqinguoyi TinyWebServer http_conn.cpp improper authenticationEPSS 0.8%CVE-2023-24093CRITICALAn access control issue in H3C A210-G A210-GV100R005 allows attackers to authenticate without a password.EPSS 0.8%CVE-2023-1464HIGHSourceCodester Medicine Tracker System improper authenticationEPSS 0.8%CVE-2024-10111HIGHOAuth Single Sign On – SSO (OAuth Client) <= 6.26.3 - Authentication BypassEPSS 0.8%CVE-2017-12213—A vulnerability in the dynamic access control list (ACL) feature of Cisco IOS XE Software running on Cisco Catalyst 4000 Series Switches couEPSS 0.8%CVE-2023-21817HIGHWindows Kerberos Elevation of Privilege VulnerabilityEPSS 0.8%