Original description
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.
Known exploited (CISA KEV)
- Added to KEV
- 2026-10-08
- Remediation due (US federal)
- 2026-10-11
- Ransomware use
- Unknown
- Required action
- Apply 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.
Details
- Published
- 2015-05-19
- Last modified
- 2026-10-10
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H- EPSS (30-day exploit probability)
- 99.50% (percentile 100)
References
- cve.org/CVE-2015-3306
- nvd.nist.gov/vuln/detail/CVE-2015-3306
- www.rapid7.com/db/modules/exploit/unix/ftp/proftpd_modcopy_exec
- www.exploit-db.com/exploits/36803/
- packetstormsecurity.com/files/131555/ProFTPd-1.3.5-Remote-Command-Execution.html
- www.debian.org/security/2015/dsa-3263
- packetstormsecurity.com/files/131567/ProFTPd-CPFR-CPTO-Proof-Of-Concept.html
- packetstormsecurity.com/files/132218/ProFTPD-1.3.5-Mod_Copy-Command-Execution.html
- lists.opensuse.org/opensuse-updates/2015-06/msg00020.html
- lists.fedoraproject.org/pipermail/package-announce/2015-May/157053.html
- lists.fedoraproject.org/pipermail/package-announce/2015-May/157054.html
- www.securityfocus.com/bid/74238
- www.exploit-db.com/exploits/36742/
- lists.fedoraproject.org/pipermail/package-announce/2015-May/157581.html
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