ProFTPD Improper Access Control Vulnerability

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

• cpe debian/debian linux7.0
• cpe debian/debian linux8.0
• cpe debian/debian linux9.0
• cpe fedoraproject/fedora20
• cpe fedoraproject/fedora21
• cpe fedoraproject/fedora22
• cpe opensuse/tumbleweedversion unspecified
• cpe proftpd/proftpd1.3.5
• cpe suse/linux enterprise server15
• vendor ProFTPD ProFTPDversion unspecified

How to fix CVE-2015-3306

• Recommended remediation

  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.

• Official advisories

  • CISA Cybersecurity Advisories · cisa.gov
  • CISA KEV · cisa.gov
  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • NIST NVD · nvd.nist.gov
  • Packet Storm Security · packetstormsecurity.com

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. May 18, 2015 · Catalog

   Detected

   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.

2. Oct 8, 2026 · CISA KEV

   Known exploited

   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

3. Oct 9, 2026 · Catalog

   Updated

   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.

4. Oct 11, 2026 · CISA KEV

   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

Sources

• CISA Cybersecurity AdvisoriesGovernment advisoryCVE-2015-3306

  Advisory at a Glance Title Chinese Government-linked Cyber Threat Actors Combine Automated and Hands-on Hacking Tools to Steal Sensitive Data <div class="TableCellContent SCXW40

  cisa.gov
• CISA KEVConfirmed exploitationCVE-2015-3306

  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.

  cisa.gov
• CVE.orgVulnerability recordCVE-2015-3306

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2015-3306

  30-day exploitation probability 99.5%

  first.org
• Exploit DatabasePublic exploit reference36803

  Public archive entry. The exploit body is not stored here.

  exploit-db.com
• Exploit DatabasePublic exploit reference37262

  Public archive entry. The exploit body is not stored here.

  exploit-db.com
• Exploit DatabasePublic exploit reference49908

  Public archive entry. The exploit body is not stored here.

  exploit-db.com
• Metasploit ModulesPublic exploit moduleexploit_unix/ftp/proftpd_modcopy_exec

  Public module reference (excellent). Module source is not copied into this catalog.

  rapid7.com
• NIST NVDVulnerability recordCVE-2015-3306

  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.

  nvd.nist.gov
• Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/131505/ProFTPd-1.3.5-File-Copy.html

  Packet Storm link already published on the finding.

  packetstormsecurity.com
• Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/131555/ProFTPd-1.3.5-Remote-Command-Execution.html

  Packet Storm link already published on the finding.

  packetstormsecurity.com
• Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/131567/ProFTPd-CPFR-CPTO-Proof-Of-Concept.html

  Packet Storm link already published on the finding.

  packetstormsecurity.com
• Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/132218/ProFTPD-1.3.5-Mod_Copy-Command-Execution.html

  Packet Storm link already published on the finding.

  packetstormsecurity.com
• VulnCheck KEVConfirmed exploitationCVE-2015-3306

  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.

  vulncheck.com

References

• Broken Link · lists.fedoraproject.org
• Broken Link · lists.fedoraproject.org
• Broken Link · lists.fedoraproject.org
• Mailing List · lists.opensuse.org
• Third Party Advisory · packetstormsecurity.com
• Third Party Advisory · packetstormsecurity.com
• Exploit · packetstormsecurity.com
• Exploit · packetstormsecurity.com
• CISA note · proftpd.org
• CISA note · lists.debian.org
• CISA note · lists.opensuse.org
• CISA note · nvd.nist.gov
• VulnCheck exploitation evidence · cisa.gov
• CISA note · cisa.gov
• CISA note · cisa.gov
• VulnCheck exploitation evidence · cisa.gov

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.