The mod_copy module in ProFTPD 1.3.5 allows remote attackers to read and write to arbitrary files via the site cpfr and site cpto commands.
Critical 10.0Actively exploited
CVE-2015-3306
ProFTPD ProFTPD — Improper Access Control.
The mod_copy module in ProFTPD 1.3.5 allows remote attackers to read and write to arbitrary files via the site cpfr and site cpto commands.
Published Updated Source NVD and CISA KEV
CVSS 3.1
10.0
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Exploit chance, 30 days
99.4%
Higher than 99% of all CVEs (EPSS)
Status
Actively exploited
On CISA KEV since 8 Oct 2026
Patch
Unknown
Check the vendor advisory
What happened
What to do
- 01Check whether you run ProFTPD, and which version.
- 02Follow the vendor advisory for a fix or a workaround.
- 03Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA deadlineUS federal agencies must remediate by
References
- NVDnvd.nist.gov
- CISA KEVcisa.gov
- Third-party advisorypacketstormsecurity.com
- Third-party advisorypacketstormsecurity.com
- Exploitpacketstormsecurity.com
- Exploitpacketstormsecurity.com
- Exploitpacketstormsecurity.com
- Mailing listlists.opensuse.org
- Mailing listdebian.org
- Reference (may be offline)lists.fedoraproject.org
- Reference (may be offline)lists.fedoraproject.org
- Reference (may be offline)lists.fedoraproject.org
Timeline · UTC
- Published to NVD
- Added to CISA KEV
- NVD record updated
- CISA remediation deadline
Also actively exploited