CVE-2025-31161 — CrushFTP Authentication Bypass Vulnerability
Overview
CrushFTP contains an authentication bypass vulnerability in the HTTP authorization header that allows a remote unauthenticated attacker to authenticate to any known or guessable user account (e.g., crushadmin), potentially leading to a full compromise.
Vulnerability details
- CVE ID
- CVE-2025-31161
- Vulnerability
- CrushFTP Authentication Bypass Vulnerability
- Vendor
- CrushFTP
- Affected products
- CrushFTP: CrushFTP
- Severity
- HIGH
- Exploitation status
- Actively exploited in the wild (CISA KEV)
- Published
- 2025-04-07
Remediation guidance
CVE-2025-31161 is in CISA's Known Exploited Vulnerabilities (KEV) catalog — U.S. federal civilian agencies are required to remediate it under Binding Operational Directive 22-01. Treat it as a priority for every environment.
Apply the vendor's official security update for CrushFTP the affected product as soon as possible. Where a patch is unavailable, apply vendor mitigations or isolate/segment exposed systems.
Hunt for indicators of compromise tied to this vulnerability and confirm logging/EDR coverage on affected assets.
Authoritative references
Remediate CVE-2025-31161 — and stay ahead of the next one
CVE-2025-31161 is listed in the CISA KEV catalog as actively exploited — treat remediation as urgent. Scan your domain free to see whether CVE-2025-31161 and other CrushFTP issues affect you and get a prioritized remediation report (full report from ₹999) — or stream the full feed of 1,600+ actively-exploited CVEs straight into your SOC.
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