CVE-2015-3306criticalunder attackCWE-284

CVE-2015-3306

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100Vexday Risk Score

Patch now. It under exploitation confirmed by CISA and has a working public exploit.

ssvc Actcvss 10epss 99%
from disclosure to weaponsame day
Published on NVDMay 18
1st PoCApr 13
metasploitApr 22
CISA KEV+4161d
What the vendors declare (VEX)

Official vendor statements in CSAF/VEX format: whether their product is affected, already fixed, or ruled out — and why. These are the vendor's assertions, not Vexday's judgment.

Not affected
1 product — because the vulnerable code is not present in the product
red_hat_products
Action required by CISAfederal deadline: 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.

In short

ProFTPD's mod_copy module allows attackers to read and write any file on the server using FTP commands, giving them complete control over files.

Technical detail

The mod_copy module in ProFTPD 1.3.5 fails to properly validate the SITE CPFR and SITE CPTO commands, enabling unauthenticated or low-privileged remote attackers to perform arbitrary file read/write operations. This results in complete file system compromise without requiring authentication bypass.

Summary generated and translated by AI from the official 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:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected products
n/a · n/a
public PoCs found — 38✓ VexDay Proof
exploitdb✓ VexDay Proofwww.exploit-db.com/exploits/37262exploitdb✓ VexDay Proofwww.exploit-db.com/exploits/36742exploitdb✓ VexDay Proofwww.exploit-db.com/exploits/49908exploitdbwww.exploit-db.com/exploits/36803unverifiedgithubgithub.com/t0kx/exploit-CVE-2015-3306★ 152githubgithub.com/nootropics/propane★ 2githubgithub.com/cybersensei-EH/hackviser_labs_CVE-2015-3306★ 1githubgithub.com/xyk0x/cpx_proftpd★ 1githubgithub.com/davidtavarez/CVE-2015-3306★ 1githubgithub.com/jptr218/proftpd_bypass★ 1githubgithub.com/cd6629/CVE-2015-3306-Python-PoC★ 1githubgithub.com/bcononugbor-source/OpenVAS-Vulnerability-Analysis-Incident-Response-Report★ 1githubgithub.com/0xm4ud/ProFTPD_CVE-2015-3306★ 1githubgithub.com/diegslva/cve-2015-3306-lab★ 0githubgithub.com/cved-sources/cve-2015-3306★ 0githubgithub.com/hackarada/cve-2015-3306★ 0githubgithub.com/JoseLRC97/ProFTPd-1.3.5-mod_copy-Remote-Command-Execution★ 0githubgithub.com/donmedfor/CVE-2015-3306★ 0githubgithub.com/netw0rk7/CVE-2015-3306-Home-Lab★ 0githubgithub.com/canpilayda/proftpd-mod_copy-cve-2015-3306★ 0githubgithub.com/cdedmondson/Modified-CVE-2015-3306-Exploit★ 0githubgithub.com/Z3R0space/CVE-2015-3306★ 0cve_referencepacketstormsecurity.com/files/162777/ProFTPd-1.3.5-Remote-Command-Execution.htmlunverifiedcve_referencepacketstormsecurity.com/files/131567/ProFTPd-CPFR-CPTO-Proof-Of-Concept.htmlunverifiedcve_referencepacketstormsecurity.com/files/131555/ProFTPd-1.3.5-Remote-Command-Execution.htmlunverifiedcve_referencewww.exploit-db.com/exploits/36742/unverifiedvulncheckvulncheck.com/xdb/537c3491c145unverifiedvulncheckvulncheck.com/xdb/167ef2696304unverifiedvulncheckvulncheck.com/xdb/7f464364a04funverifiedvulncheckvulncheck.com/xdb/5ca93f4359feunverifiedvulncheckvulncheck.com/xdb/37c8b5890c73unverifiedvulncheckvulncheck.com/xdb/f88c1ceda400unverifiedvulncheckvulncheck.com/xdb/cf8a5b58ef63unverifiedvulncheckvulncheck.com/xdb/db77ad285709unverifiedvulncheckvulncheck.com/xdb/edac01077a79unverifiedcve_referencepacketstormsecurity.com/files/131505/ProFTPd-1.3.5-File-Copy.htmlunverifiedcve_referencepacketstormsecurity.com/files/132218/ProFTPD-1.3.5-Mod_Copy-Command-Execution.htmlunverifiedcve_referencewww.exploit-db.com/exploits/36803/unverified
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