CVE-2015-3306

HIGHCVSS v2 · 10.010.0▲
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 10.0 — v2 rates that HIGH (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:C/I:C/A:C. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 96.8% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
Weaponized
10.0EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 97%
CISA-KEV: Not listedEPSS PROB: 97%CVSS v2: 10.0Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v2.0 (legacy)
10.0HIGHNVD never assigned a CVSS v3 rating to this CVE
EG Score
10.0(low)
EG Risk
88(Track)
EG Risk 88/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity100% × 45%
Exploitation97% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
97%
EPSS %ILE
100%
KEV
Not listed

Published

May 18, 2015

Last Modified

May 6, 2026

References (28)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 0× in last 7d / 0× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

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Publicly available exploits

(8 references)

Working exploit code is in the public domain (1 Metasploit module) (2 GitHub PoCs) (4 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-49908✓ verified
    First seen May 26, 2021

    ProFTPd 1.3.5 - 'mod_copy' Remote Command Execution (2)

    Open source ↗
  • GitHub PoCt0kx/exploit-CVE-2015-3306
    First seen Jan 8, 2017

    ProFTPd 1.3.5 - (mod_copy) Remote Command Execution exploit and vulnerable container

    Open source ↗
  • Exploit-DBEDB-37262✓ verified
    First seen Jun 10, 2015

    ProFTPd 1.3.5 - 'mod_copy' Command Execution (Metasploit)

    Open source ↗
  • GitHub PoCnootropics/propane
    First seen Apr 26, 2015

    Exploits the arbitrary file write bug in proftpd (CVE-2015-3306) attempts code execution

    Open source ↗
  • Metasploitexploit/unix/ftp/proftpd_modcopy_exec✓ verified
    First seen Apr 22, 2015

    ProFTPD 1.3.5 Mod_Copy Command Execution

    Open source ↗
  • Exploit-DBEDB-36803
    First seen Apr 21, 2015

    ProFTPd 1.3.5 - 'mod_copy' Remote Command Execution

    Open source ↗
  • Exploit-DBEDB-36742✓ verified
    First seen Apr 13, 2015

    ProFTPd 1.3.5 - File Copy

    Open source ↗
  • Nucleinetwork/cves/2015/CVE-2015-3306.yaml
    First seen Jan 1, 2015

    ProFTPd - Remote Code Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2015-3306?
CVE-2015-3306 is a high vulnerability published on May 18, 2015. 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.
When was CVE-2015-3306 disclosed?
CVE-2015-3306 was first published in the National Vulnerability Database on May 18, 2015, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-3306 actively exploited?
CVE-2015-3306 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 97% probability of exploitation in the next 30 days, which ranks it in the top 0.1% of all scored CVEs.
How do I remediate CVE-2015-3306?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-3306, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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