CVE-2025-54309
Confirmed PUBLISHEDCrushFTP 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...
1 day faster than CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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.
- CVE Published
- Jul 18, 2025
- Exploitation Reported
- Jun 01, 2026
- CVSS
- 9.0 Critical
- EPSS
- 92.0%
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| CrushFTP |
CrushFTP
|
10 to < 10.8.5 |
Affected |
| CrushFTP |
CrushFTP
|
11 to < 11.3.4_23 |
Affected |
CVE References
- crushftp.com/crush11wiki/Wiki.jsp crushftp.com · CVE Record https://www.crushftp.com/crush11wiki/Wiki.jsp?page=CompromiseJuly2025
- rapid7.com/blog/post/crushftp-zero-day-exploited-in-the... rapid7.com · CVE Record https://www.rapid7.com/blog/post/crushftp-zero-day-exploited-in-the-w...
- bleepingcomputer.com/news/security/crushftp-zero-day-exploited-in... bleepingcomputer.com · CVE Record https://www.bleepingcomputer.com/news/security/crushftp-zero-day-expl...
- vicarius.io/vsociety/posts/cve-2025-54309-detect-crushft... vicarius.io · CVE Record https://www.vicarius.io/vsociety/posts/cve-2025-54309-detect-crushftp...
- vicarius.io/vsociety/posts/cve-2025-54309-mitigate-crush... vicarius.io · CVE Record https://www.vicarius.io/vsociety/posts/cve-2025-54309-mitigate-crushf...
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CVE First | 2026-06-01 10:37 UTC |
| CISA | 2026-06-02 14:06 UTC |
| The Shadowserver | 2026-06-11 00:00 UTC |
| Daily CyberSecurity | 2026-06-17 19:20 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Exploitation Status
Exploited in the wild
Recorded 2026-06-01 10:37:11 UTC · CVE
Weaknesses (CWE)
-
Unprotected Alternate Channel
Recent Mentions
Daily CyberSecurity · Jun 17, 2026
A critical Apache Shiro LDAP Injection vulnerability has recently emerged. Specifically, security researchers identified a severe flaw The post Critical Apache Shiro LDAP Injection Flaw Uncovered appeared first on Daily CyberSecurity. Related posts: Critical Auth Bypass Vulnerability (CVE-2025-51381) Found in KAON KCM3100 Gateways PoC Available: CrushFTP Zero-Day (CVE-2025-54309) Exploited in the Wild CVE-2025-40804: Critical Flaw in Siemens SIVaaS Exposes Network Share Without Authentication
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
19:20 UTC 29 days ago19:20 UTC · 29 days ago
KEV confirmed by Daily CyberSecurity
Exploitation attested by an external source
-
00:00 UTC about 1 month ago00:00 UTC · about 1 month ago
KEV confirmed by The Shadowserver
Exploitation attested by an external source
-
14:06 UTC about 1 month ago14:06 UTC · about 1 month ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
10:37 UTC about 2 months ago10:37 UTC · about 2 months ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
00:00 UTC 12 months ago00:00 UTC · 12 months ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC 12 months ago00:00 UTC · 12 months ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2025-54309
{
"cve_id": "CVE-2025-54309",
"title": "CrushFTP 10 before 10.8.5 and 11 before 11.3.4_23, when the DMZ proxy feature...",
"affected_vendor": "CrushFTP",
"affected_product": "CrushFTP",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 9.0,
"epss_score": 0.92034,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}