CVE-2015-3306
KEVProFTPD Improper Access Control Vulnerability
Description
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.
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 3.1 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HPublishedMay 18, 2015
Last modifiedOct 9, 2026
Added to KEVOct 8, 2026
Remediation dueOct 11, 2026
References
- lists.fedoraproject.org/pipermail/package-announce/2015-May/157053.htmlBroken LinkMailing List
- lists.fedoraproject.org/pipermail/package-announce/2015-May/157054.htmlBroken LinkMailing List
- lists.fedoraproject.org/pipermail/package-announce/2015-May/157581.htmlBroken LinkMailing List
- lists.opensuse.org/opensuse-updates/2015-06/msg00020.htmlMailing ListThird Party Advisory
- packetstormsecurity.com/files/131505/ProFTPd-1.3.5-File-Copy.htmlThird Party AdvisoryVDB Entry
- packetstormsecurity.com/files/131555/ProFTPd-1.3.5-Remote-Command-Execution.htmlThird Party AdvisoryVDB Entry
- packetstormsecurity.com/files/131567/ProFTPd-CPFR-CPTO-Proof-Of-Concept.htmlExploitVDB Entry
- packetstormsecurity.com/files/132218/ProFTPD-1.3.5-Mod_Copy-Command-Execution.htmlExploitVDB Entry
- packetstormsecurity.com/files/162777/ProFTPd-1.3.5-Remote-Command-Execution.htmlExploitVDB Entry
- debian.org/security/2015/dsa-3263Mailing ListThird Party Advisory
- rapid7.com/db/modules/exploit/unix/ftp/proftpd_modcopy_execThird Party Advisory
- securityfocus.com/bid/74238Third Party Advisory
0 recent articles mention this CVE
90
Risk assessment · Critical
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 15 days
- CVSS
- 10.0 CRITICAL
- EPSS (30-day exploit probability)
- 99.5% · top 1% of all CVEs
- Weakness
- CWE-284
- Attack vector
- Network, remotely reachable
- Preconditions
- No privileges and no user interaction
Recommended actions
- 1.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.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.