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CVE-2025-54309

CrushFTP 10 before 10.8.5 and 11 before 11.3.4_23, when the DMZ proxy feature is not used, mishandles AS2 validation and consequently allows remote attackers…

Critical Known exploited
Severity
9.8 / 10
Critical · CVSS 3.1
Exploit chance (EPSS)
93.47%
Chance of exploitation in the next 30 days. Higher than 99.84% of scored vulnerabilities.
Known exploited
Yes
In CISA's catalog since Jul 22, 2025
Weakness
CWE-420 Unprotected Alternate Channel
Fix
None yet
No fixed version published
Exploited in the wild. CrushFTP Unprotected Alternate Channel Vulnerability (CrushFTP CrushFTP). Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Due for U.S. federal agencies by Aug 12, 2025.

Description

CrushFTP 10 before 10.8.5 and 11 before 11.3.4_23, when the DMZ proxy feature is not used, mishandles AS2 validation and consequently allows remote attackers to obtain admin access via HTTPS, as exploited in the wild in July 2025.

How to fix

No fixed version has been published yet. Until one is, remove or replace the package, or turn off or isolate the affected feature. This page updates when a fix ships.

Severity breakdown

CVSS 3.1 9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Weakness

CWE-420: Unprotected Alternate Channel

The product protects a primary channel, but it does not use the same level of protection for an alternate channel.

How to prevent it
  • Architecture and Design: Identify all alternate channels and use the same protection mechanisms that are used for the primary channels.

References

Advisories

Other links

Timeline

  1. Published
  2. Added to CISA's Known Exploited Vulnerabilities catalog
  3. Remediation due for U.S. federal agencies
  4. Last updated by the source
  5. Latest EPSS score
AdvisorySeverityWhy it's related
GHSA-wxxx-gvqv-xp7p
LiteLLM has a sandbox escape in custom-code guardrail
High Same weakness, CWE-420
GHSA-xwgj-vpm9-q2rq
Vulnerable juju introspection abstract UNIX domain socket
Medium Same weakness, CWE-420
CVE-2023-20198
Cisco is providing an update for the ongoing investigation into observed exploitation of the web UI feature in Cisco IOS XE Software.
Critical Known exploited Same weakness, CWE-420
GHSA-232p-vwff-86mp
Docker Swarm encrypted overlay network may be unauthenticated
High Same weakness, CWE-420
GHSA-6wrf-mxfj-pf5p
Docker Swarm encrypted overlay network with a single endpoint is unauthenticated
Medium Same weakness, CWE-420
GHSA-wqv3-8cm6-h6wg
Improper Authentication in Kubernetes
High Same weakness, CWE-420
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