CVE-2025-54309

criticalpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.935 · 100 %ileexploit · PoCDEEUNLRUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 7 exploits · PoC

Likely / severe?

93.5% (100th) EPSS

CVSS 9.8 · critical

Is it mine?

12 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

added 2025-07-22remediate by 2025-08-12

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.

EPSS · scored 2026-10-26

CrushFTP Unprotected Alternate Channel Vulnerability

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.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19criticalAV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19criticalCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · ENISA EU

v3.19criticalCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · cve@mitre.org USexploitability 2.2 · impact 6

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-420USCWE-420USCWE-420US

ATT&CK techniques

ATT&CK techniques this enables or maps to.

exploits (7)

Public proof-of-concept and weaponised exploit code.

0xLittleSpidy/CVE-2025-543090xLittleSpidy/CVE-2025-54309PoC · poc_in_github
Goodworkid0/CrushFTP-AS2-Bypass-Research-CVE-2025-54309CrushFTP AS2 authentication-bypass research with lab notes and defensive detection rules.PoC · poc_in_github
blueisbeautiful/CVE-2025-54309CrushFTP AS2 Authentication BypassPoC · poc_in_github
chin-tech/CrushFTP_CVE-2025-54309chin-tech/CrushFTP_CVE-2025-54309PoC · poc_in_github
foregenix/CVE-2025-54309Exploitation scripts for the CrushFTP CVE-2025-54309: vulnerabilityPoC · poc_in_github
watchtowrlabs/watchTowr-vs-CrushFTP-Authentication-Bypass-CVE-2025-54309watchtowrlabs/watchTowr-vs-CrushFTP-Authentication-Bypass-CVE-2025-54309PoC · poc_in_github

affected products (12)

Products and version ranges known to be affected.

CrushFTP CrushFTP <10.8.5all versionscert_bundDE
CrushFTP CrushFTP <11.3.4_23all versionscert_bundDE
CrushFTP CrushFTP< 10.8.5cert_bundDE
CrushFTP CrushFTP< 11.3.4_23cert_bundDE
CrushFTP CrushFTP10 → 10.8.5enisa_euvdEU
CrushFTP CrushFTP11 → 11.3.4_23enisa_euvdEU
Converge Technology Solutions CrushFTP10 → 10.8.5fstec_bduRU
Converge Technology Solutions CrushFTP11 → 11.3.4_23fstec_bduRU
CrushFTP CrushFTP≤ vers:unknown/10|<10.8.5ncsc_nlNL
CrushFTP CrushFTP≤ vers:unknown/11|<11.3.4_23ncsc_nlNL
crushftp crushftp10.0.0 → 10.8.5nvdUScpe:2.3:a:crushftp:crushftp:*:*:*:*:*:*:*:*
crushftp crushftp11.0.0 → 11.3.4_23nvdUScpe:2.3:a:crushftp:crushftp:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

NCSC-2025-0234Kwetsbaarheid verholpen in CrushFTPNL2025-07-21csaf · ncsc_nlNL
CrushFTP heeft een kwetsbaarheid verholpen in versies 10 tot en met 10.8.5 en 11 tot en met 11.3.4_23.
WID-SEC-W-2025-1608CrushFTP: Schwachstelle ermöglicht Erlangen von AdministratorrechtenDeutsch2025-07-20csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in CrushFTP ausnutzen, um Administratorrechte zu erlangen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund ncsc_nl nvd NVD CVE.org MITRE

published 2025-07-18modified 2026-06-17

references (16)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan