CVE-2025-54309 (GCVE-0-2025-54309)

Vulnerability from cvelistv5 – Published: 2025-07-18 00:00 – Updated: 2025-10-21 22:45
VLAI CISA Shadowserver Previdian
Summary
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.
Severity
9 (Critical)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: active Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-15 18:50 UTC
CWE
  • CWE-420 - Unprotected Alternate Channel
Assigner
mitre CNA under the mitre root
CNA scorecard E 29/100 over 2157 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
CrushFTP CrushFTP Affected: 10 , < 10.8.5 (custom)
Affected: 11 , < 11.3.4_23 (custom)
    cpe:2.3:a:crushftp:crushftp:*:*:*:*:*:*:*:*
    cpe:2.3:a:crushftp:crushftp:*:*:*:*:*:*:*:*
Create a notification for this product.
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: b67ab5c0-eb59-416f-90e1-203f6f4736bf

Vulnerability ID: CVE-2025-54309

Status: Confirmed

Status Updated: 2025-07-22 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2025-07-22
Asserted: 2025-07-22
Scope
Notes: CrushFTP Unprotected Alternate Channel Vulnerability | Affected: CrushFTP / CrushFTP | Description: CrushFTP contains an unprotected alternate channel vulnerability. When the DMZ proxy feature is not used, mishandles AS2 validation and consequently allows remote attackers to obtain admin access via HTTPS. | 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 date: 2025-08-12 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://www.crushftp.com/crush11wiki/Wiki.jsp?page=CompromiseJuly2025 ; https://nvd.nist.gov/vuln/detail/CVE-2025-54309
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-420
Feed CISA Known Exploited Vulnerabilities Catalog
Product CrushFTP
Due Date 2025-08-12
Date Added 2025-07-22
Vendorproject CrushFTP
Vulnerabilityname CrushFTP Unprotected Alternate Channel Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 13:24 UTC | Updated: 2026-11-04 13:02 UTC
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 2feb59b9-2bd6-475d-8a21-60188d67fa9e

Vulnerability ID: CVE-2025-54309

Status: Confirmed

Status Updated: 2026-11-08 00:00 UTC

Exploited: Yes

Characteristics
Severity: 98.0
Timestamps
First Seen: 2025-10-10
Asserted: 2025-10-10
Last Seen: 2026-11-08
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: CrushFTP / CrushFTP | Class: file-transfer | Severity: Critical (CVSS 9.8) | IoT: no | In CISA KEV: yes | Honeypot connections on 2026-11-08: 3
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 1
Iot no
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class file-transfer
7D Avg 0
Vendor CrushFTP
30D Avg 0
90D Avg 0
Product CrushFTP
Cisa Kev yes
Connections 3
Observation Date 2026-11-08
Vulnerability Class CVSS
Vulnerability Score 9.8
Vulnerability Severity Critical
References
Created: 2026-07-01 07:18 UTC | Updated: 2026-11-10 01:00 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: e96a3653-b597-4941-89a4-65c358b6e6f1

Vulnerability ID: CVE-2025-54309

Status: Confirmed

Status Updated: 2026-06-01 10:37 UTC

Exploited: Yes

Timestamps
First Seen: 2026-06-01
Asserted: 2026-06-01
Scope
Notes: KEVIntel entry: 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... | Affected: CrushFTP / CrushFTP | CVSS: 9.0 (CRITICAL) | EPSS: 0.92034 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title 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...
Vendor CrushFTP
Product CrushFTP
Added Date 2026-06-01T10:37:11.050Z
Cvss Score 9.0
Epss Score 0.92034
Cvss Severity CRITICAL
Epss Percentile 0.99808
Used In Malware unknown
Ahead Of Cisa Kev 
{
  "count": 1,
  "unit": "day"
}
Not Yet In Cisa Kev False
References
Created: 2026-06-19 12:42 UTC | Updated: 2026-06-19 12:42 UTC
Show details on NVD website
To clipboard 

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              "url": "https://www.vicarius.io/vsociety/posts/cve-2025-54309-mitigate-crushftp-vulnerability"
            }
          ],
          "x_generator": {
            "engine": "enrichogram 0.0.1"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "assignerShortName": "mitre",
        "cveId": "CVE-2025-54309",
        "datePublished": "2025-07-18T00:00:00.000Z",
        "dateReserved": "2025-07-18T00:00:00.000Z",
        "dateUpdated": "2025-10-21T22:45:21.853Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.