CVE-2025-54309

criticalknown exploitedpublic exploitcovered by 1 sourcefirst seen 2025-07-22

Actively exploited. CVE-2025-54309 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-07-22) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.

Public exploit code is available. Proof-of-concept or working exploit code for CVE-2025-54309 is indexed in GitHub PoC. Expect opportunistic scanning and exploitation attempts — prioritize remediation.

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.

CSIRTS triage

What: CrushFTP contains an unprotected alternate channel vulnerability that allows remote attackers to obtain admin access via HTTPS.
Who is affected: Deployments of CrushFTP that are not using the DMZ proxy feature.
Urgency: Immediate remediation is necessary as the vulnerability is actively exploited and rated critical.
Action: Update to the latest version of CrushFTP.

AI-assisted analysis generated from the source advisory — verify against the original.

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Exploitation outlook

Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 100% of all EPSS-scored CVEs.

Exploit availability

Public exploit or proof-of-concept code for CVE-2025-54309 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.

GitHub PoCPublic proof-of-concept repositories on GitHub reference this CVE.look it up ↗

Advisory coverage (1)

criticalexploitedCVE-2025-54309: CrushFTP Unprotected Alternate Channel Vulnerabilitycisa-kev · 2025-07-22

External references

NVD record for CVE-2025-54309

CVE.org record

CISA KEV catalog

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