CVE-2015-3306

Aliases:DEBIAN-CVE-2015-3306
Advisory lineage Upstream: 0 Downstream: 4
Modified
Published: 18 May 2015, 15:00
Last modified:08 Oct 2026, 19:58

Vulnerability Summary

Overall Risk (default)
critical
90/100
CVSS Score
10 CRITICAL
v3.1 (nvd)
EPSS Score
96.75% CRITICAL
97% probability +2.82%
KEV
Listed
CISA
1 listing
Ransomware
No reports
Public exploits
5 found
Dark Web
Not detected

Timeline

18 May 2015, 15:00
Published
Vulnerability first disclosed
08 Oct 2026, 00:00
Added to CISA KEV
ProFTPD Improper Access Control Vulnerability
08 Oct 2026, 19:58
Last Modified
Vulnerability information updated
11 Oct 2026, 00:00
CISA Remediation Due
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.

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.

CVSS Metrics

  • v3.1•CRITICAL•Score: 10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
  • v2.0•HIGH•Score: 10AV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 96.75%• Percentile: 100%

Techniques & Countermeasures

  • CWE-284•Improper Access Control

    The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Affected Systems

  • debian•proftpd-dfsg

    < 1.3.5-2 | < 1.3.5-2 | < 1.3.5-2 | < 1.3.5-2

  • proftpd•proftpd

    1.3.5

References (16)