What’s Vulnerable › Vulnerabilities

CVE-2018-3775

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-08-12 · updated 2026-06-17
• Weakness: CWE-287

Description

Improper Authentication in Nextcloud Server prior to version 12.0.3 would allow an attacker that obtained user credentials to bypass the 2 Factor Authentication.

Affected products

• Nextcloud Server: before 12.0.3 — fixed in 12.0.3

How to fix

Upgrade to a fixed version: Nextcloud Server 12.0.3. Check the vendor advisory for mitigations.

References

• https://hackerone.com/reports/248656
• https://nextcloud.com/security/advisory/?id=NC-SA-2018-007
• https://hackerone.com/reports/248656
• https://nextcloud.com/security/advisory/?id=NC-SA-2018-007

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