Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2015-3306

93
FAUCET Score

CVE-2015-3306 is a critical vulnerability affecting ProFTPD 1.3.5, specifically its mod_copy module. This flaw allows unauthenticated remote attackers to read and write arbitrary files using the site cpfr and site cpto commands. With a CVSS score of 10.0 and an EPSS score indicating high exploitability, this vulnerability poses a severe risk, enabling full compromise of confidentiality, integrity, and availability. Numerous public exploits exist, including Metasploit modules and Nuclei templates, and it has garnered significant community discussion and media coverage, indicating widespread awareness and potential for active exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
1.3.5CPE matchmatch criteria
cpe:2.3:a:proftpd:proftpd:1.3.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

AV:N/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
96.80%
Probability of exploitation in next 30 days
EPSS Percentile
99.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Metasploit: ProFTPD 1.3.5 Mod_Copy Command Execution · Apr 22, 2015
Nuclei: CVE-2015-3306 · Feb 24, 2021
ExploitDB: EDB-49908 · May 26, 2021
This CVE's current EPSS score of 0.9680 is in the 100th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.fedoraproject.org / pipermail/package-announce/2015-May/157053.html
lists.fedoraproject.org / pipermail/package-announce/2015-May/157054.html
lists.fedoraproject.org / pipermail/package-announce/2015-May/157581.html
lists.opensuse.org / opensuse-updates/2015-06/msg00020.html
packetstormsecurity.com / files/131505/ProFTPd-1.3.5-File-Copy.html
packetstormsecurity.com / files/131555/ProFTPd-1.3.5-Remote-Command-Execution.html
packetstormsecurity.com / files/131567/ProFTPd-CPFR-CPTO-Proof-Of-Concept.html
packetstormsecurity.com / files/132218/ProFTPD-1.3.5-Mod_Copy-Command-Execution.html
packetstormsecurity.com / files/162777/ProFTPd-1.3.5-Remote-Command-Execution.html
exploit-db.com / exploits/36742
Exploit
exploit-db.com / exploits/36803
Exploit
debian.org / security/2015/dsa-3263
rapid7.com / db/modules/exploit/unix/ftp/proftpd_modcopy_exec
securityfocus.com / bid/74238