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two-factor_webauthn

Vendor: nextcloud

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Actively Exploited 0 CISA KEV List
PoC / Exploits 0 Code Available
Total RCEs 0 Remote Access
Total CVEs 3 Total Indexed
Avg. EPSS 0.28% Exploit Prob.
Latest CVE CVE-2025-66558 Dec 05

Security Vulnerability Index

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3.1 CVSS
CVE-2025-66558

Nextcloud Twofactor WebAuthn is the WebAuthn Two-Factor Provider for Nextcloud. Prior to 1.4.2 and 2.4.1, a missing ownership check allowed an attack to take-away a 2FA webauthn device when correctly guessing a 80-128 character long random string of letters, numbers and symbols. The victim would then be prompted to register a new device on the next login. The attacker can not authenticate as the victim. This vulnerability is fixed in 1.4.2 and 2.4.1.

EPSS: 0.28%