CVE-2024-4040

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2024-04-24. Federal remediation due 2024-05-01.

SSVC decision

• ExploitationactiveCISA reports credible evidence of active exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• 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

99.54% 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

10.0 (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:C/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

2024-04-22 19:21Z2 YR AGO

Last updated

2025-10-21 23:05Z10 MO AGO

Reserved

2024-04-22

Assigning CNA

directcyber

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-1336Improper Neutralization of Special Elements Used in a Template EngineBase
• CWE-94Improper Control of Generation of Code ('Code Injection')Base

Data version

5.1

Document digest

2ec2c950c50e34646bfa85f6c4f3540909577d21275b2d08315ef08a19743706

• www.crushftp.comhttps://www.crushftp.com/crush11wiki/Wiki.jsp?page=Updatevendor-advisory
• www.crushftp.comhttps://www.crushftp.com/crush10wiki/Wiki.jsp?page=Updatevendor-advisory
• www.reddit.comhttps://www.reddit.com/r/cybersecurity/comments/1c850i2/all_versions_of_crush_ftp_are_vulnerable/related
• www.bleepingcomputer.comhttps://www.bleepingcomputer.com/news/security/crushftp-warns-users-to-patch-exploited-zero-day-immediately/media-coverage
• www.reddit.comhttps://www.reddit.com/r/crowdstrike/comments/1c88788/situational_awareness_20240419_crushftp_virtual/third-party-advisory
• www.rapid7.comhttps://www.rapid7.com/blog/post/2024/04/23/etr-unauthenticated-crushftp-zero-day-enables-complete-server-compromise/third-party-advisory
• github.comhttps://github.com/airbus-cert/CVE-2024-4040exploit
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-4040government-resource