CVE-2015-3306

CriticalActively exploited (CISA KEV)

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.

SeverityCritical
CVSS10.0
Exploit probability—
ProductProFTPD
PublishedMay 18, 2015
First seenMay 18, 2015
Added to KEVOct 8, 2026

How to fix

CISA 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.

CISA due date: Oct 11, 2026

Affected products

ProductAffected versionsFixed in
proftpd proftpd1.3.5—
fedoraproject fedora20, 21, 22—
debian debian_linux7.0, 8.0, 9.0—
opensuse tumbleweedNo range specified—
suse linux_enterprise_server15—

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