NetSight
critical10.0Known exploitedPublic exploit code

CVE-2015-3306

ProFTPD Improper Access Control Vulnerability

Exploited in the wild

This vulnerability is on the CISA Known Exploited Vulnerabilities list, added 2026-10-08. Federal due date: 2026-10-11.

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.

Public exploit code

Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.

Impact

ProFTPD contains an improper access control vulnerability that could allow remote attackers to read and write to arbitrary files via the site cpfr and site cpto commands.

Affected products

VendorProductAffected versions
FedoraprojectFedora
Versions 20, 21, 22
DebianDebian Linux
Versions 7.0, 8.0, 9.0
OpensuseTumbleweed
All versions
SuseLinux Enterprise Server
Version 15
ProftpdProftpd
Version 1.3.5

Weakness classification

References