CVE-2025-54309

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2025-07-22. Federal remediation due 2025-08-12.

SSVC decision

• ExploitationactiveCISA reports credible evidence of active exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

94.71% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 99.9% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2025-07-18 00:00Z1 YR AGO

Last updated

2025-10-21 22:45Z10 MO AGO

Reserved

2025-07-18

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Critical (CVSS 9.0)

CNA CVSS vector

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

Weaknesses

• CWE-420Unprotected Alternate ChannelBase

Data version

5.1

Document digest

db602a5cfc40b091132a976e5387104cfd04c42bf8096656e7378404931deee8

• www.crushftp.comhttps://www.crushftp.com/crush11wiki/Wiki.jsp?page=CompromiseJuly2025
• www.rapid7.comhttps://www.rapid7.com/blog/post/crushftp-zero-day-exploited-in-the-wild/
• www.bleepingcomputer.comhttps://www.bleepingcomputer.com/news/security/crushftp-zero-day-exploited-in-attacks-to-gain-admin-access-on-servers/
• www.vicarius.iohttps://www.vicarius.io/vsociety/posts/cve-2025-54309-detect-crushftp-vulnerability
• www.vicarius.iohttps://www.vicarius.io/vsociety/posts/cve-2025-54309-mitigate-crushftp-vulnerability
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-54309government-resource