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-2018-4836—A vulnerability has been identified in TeleControl Server Basic < V3.1. An authenticated attacker with a low-privileged account to the TeleCEPSS 1.8%CVE-2022-35925MEDIUMMissing rate limit in Authentication in bookwyrmEPSS 1.8%CVE-2019-1662HIGHCisco Prime Collaboration Assurance Software Unauthenticated Access VulnerabilityEPSS 1.8%CVE-2016-2124—A flaw was found in the way samba implemented SMB1 authentication. An attacker could use this flaw to retrieve the plaintext password sent oEPSS 1.8%CVE-2020-4074HIGHImproper AuthenticationEPSS 1.8%CVE-2017-14026—In Ice Qube Thermal Management Center versions prior to version 4.13, the web application does not properly authenticate users which may allEPSS 1.8%CVE-2021-43445CRITICALONLYOFFICE all versions as of 2021-11-08 is affected by Incorrect Access Control. An attacker can authenticate with the web socket service oEPSS 1.7%CVE-2025-55169CRITICALWeGIA Path Traversal at endpoint 'html/socio/sistema/download_remessa.php' via parameter 'file'EPSS 1.7%CVE-2026-65400CRITICALAn authentication issue was addressed with improved state management. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.7.9, macEPSS 1.7%KEVCVE-2021-31349CRITICALSession Smart Router: Authentication Bypass VulnerabilityEPSS 1.7%CVE-2023-2706HIGHOTP Login Woocommerce & Gravity Forms <= 2.2 - Authentication Bypass to Privilege EscalationEPSS 1.7%CVE-2020-25165—BD Alaris PC Unit, Model 8015, Versions 9.33.1 and earlier and BD Alaris Systems Manager, Versions 4.33 and earlier The affected products arEPSS 1.7%CVE-2021-21378HIGHJWT authentication bypass with unknown issuer tokenEPSS 1.7%CVE-2020-8253—Improper authentication in Citrix XenMobile Server 10.12 before RP2, Citrix XenMobile Server 10.11 before RP4, Citrix XenMobile Server 10.10EPSS 1.7%CVE-2021-41157MEDIUMFreeSWITCH does not authenticate SIP SUBSCRIBE requests by defaultEPSS 1.7%CVE-2020-25719—A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication. The Samba AD DCEPSS 1.7%CVE-2021-36368LOWAn issue was discovered in OpenSSH before 8.9. If a client is using public-key authentication with agent forwarding but without -oLogLevel=vEPSS 1.7%CVE-2025-26326HIGHA vulnerability was identified in the NVDA Remote (version 2.6.4) and Tele NVDA Remote (version 2025.3.3) remote connection add-ons, which aEPSS 1.7%CVE-2019-20464HIGHAn issue was discovered on Sannce Smart HD Wifi Security Camera EAN 2 950004 595317 devices. By default, a mobile application is used to strEPSS 1.7%CVE-2018-5387—Wizkunde SAMLBase may incorrectly utilize the results of XML DOM traversal and canonicalization APIs in such a way that an attacker may be aEPSS 1.7%