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ExploitedIn CISA KEVFix available

CVE-2025-54309

Exploitation confirmed. First attested on 2025-07-22 by CISA-ADP, CISA KEV, GCVE · kevintel, GCVE · shadowserver.

  • Published2025-07-18
  • Fixed in11.3.4_23 · 10.8.5
  • WeaknessCWE-420

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2025-07-1819:15CVE publishedNVD
  2. 2025-07-22Added to the CISA KEV catalogCISA KEV
  3. 2025-07-22Listed as exploited by GCVEGCVE
  4. 2025-07-22Exploitation first reportedCISA KEV
  5. 2025-08-1518:50SSVC exploitation set to activeCISA-ADP

Versions per branch

NVD
Crushftp
BranchAffectedFixed in
11.x≥ 11.0.0, < 11.3.4_2311.3.4_23
10.x≥ 10.0.0, < 10.8.510.8.5

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As mitre, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • CrushFTPother versions: not affected
    Affected
    • ≥ 10, < 10.8.5fixed in 10.8.5custom
    • ≥ 11, < 11.3.4_23fixed in 11.3.4_23custom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2025-09-25

Fix

  1. Update Crushftp to 11.3.4_23 · 10.8.5
  2. CISA’s 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 2025-08-12

Advisories and patches

Detection

read 2026-11-01 01:02 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2025-07-22
Patch Due Date
2025-08-12
Ransomware Use
Unknown
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.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2025-07-18
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-rh5q-v9ww-rqgm

Frequently asked questions

What is 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 to obtain admin access via HTTPS, as exploited in the wild in July 2025.

Is CVE-2025-54309 actively exploited?

Yes. CVE-2025-54309 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2025-08-12.

What is the CVSS score for CVE-2025-54309?

CVE-2025-54309 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record