Which products and versions are affected by CVE-2025-54309?

Affected: CrushFTP versions >= 10. The full list is in the CVE brief.

Is CVE-2025-54309 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jul 18, 2025.

Is CVE-2025-54309 in the CISA KEV catalog?

Yes. It was added on Jul 22, 2025 with a federal remediation due date of Aug 12, 2025.

Is there a public exploit for CVE-2025-54309?

Public exploit code is available.

Is there a fix for CVE-2025-54309?

Fixed versions are available, including CrushFTP 10.8.5, CrushFTP 11.3.4_23.

How urgently should CVE-2025-54309 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2025-54309

CriticalExploitedPublic exploit

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.

Published Jul 18, 2025 · Updated Nov 5, 2025

Key Facts

Patch immediately

CVE-2025-54309 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting CrushFTP.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jul 18, 2025. Public exploit code is available.
EPSS estimates a 95% probability of exploitation in the next 30 days.
Fixed versions are available, including CrushFTP 10.8.5, CrushFTP 11.3.4_23.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

9.8

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

EPSS (30-day exploit likelihood)

95%

Higher than 99.8% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2025-54309 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	Jul 22, 2025	Aug 12, 2025	Not reported
Industry KEV feed	Jul 18, 2025	Aug 12, 2025	Not reported
CIRCL KEV	Jul 22, 2025	Aug 12, 2025	Not reported
ENISA EUVD	Jul 22, 2025	n/a	Not reported

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.

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
CrushFTPCrushftp	>= 10	10.8.5

Patched Releases

CrushFTP

10.8.5, 11.3.4_23

Timeline

Publicly disclosed
Jul 18, 2025
Added to Industry KEV feed
Jul 18, 2025
Added to CISA KEV
Jul 22, 2025
Added to CIRCL KEV
Jul 22, 2025
Added to ENISA EUVD
Jul 22, 2025
Last updated
Nov 5, 2025

Weakness Type

CWE-420 Unprotected Alternate Channel

References

9 more references in the full CVE brief

FAQ

Common Questions.

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.
Affected: CrushFTP versions >= 10. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jul 18, 2025.
Yes. It was added on Jul 22, 2025 with a federal remediation due date of Aug 12, 2025.
Public exploit code is available.
Fixed versions are available, including CrushFTP 10.8.5, CrushFTP 11.3.4_23.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2025-54309 Running On Your Attack Surface?

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