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DualShield 5.9.8.0821 allows username enumeration on its login form. A valid username results in prompting for the password, whereas an invalid one will produce an "unknown username" error message.

CVE-2020-28918 is a medium-severity vulnerability identified in DualShield version 5.9.8.0821, a multi-factor authentication (MFA) solution. The vulnerability allows an attacker to perform username enumeration via the login form. Specifically, when a user attempts to log in, the system responds differently depending on whether the username exists or not: a valid username prompts for a password, while an invalid username triggers an "unknown username" error message. This behavior enables an attacker to systematically test usernames and confirm which ones are valid within the system. The vulnerability has a CVSS 3.1 base score of 5.3, indicating a medium severity level. The vector string (CVSS:3.1/AC:L/AV:N/A:N/C:L/I:N/PR:N/S:U/UI:N) shows that the attack requires no privileges and no user interaction, can be performed remotely over the network, and impacts confidentiality by revealing valid usernames. However, it does not affect integrity or availability. No known exploits are reported in the wild, and no patches or vendor advisories are currently linked. The vulnerability is significant because username enumeration can be a precursor to more targeted attacks such as password guessing, brute force, or social engineering campaigns. Since DualShield is used to secure access to sensitive systems via MFA, leaking valid usernames undermines the security posture by providing attackers with a list of legitimate accounts to target.

Detailed information about CVE-2020-28918: n/a in n/a affecting n/a n/a. Get real-time updates, technical details, and mitigation strategies.

CVE-2020-28918: n/a in n/a - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2020-28918: n/a in n/a

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