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-2010-20103

47
FAUCET Score

CVE-2010-20103 describes a critical backdoor vulnerability found in the official ProFTPD 1.3.3c source tarball, distributed between November 28 and December 2, 2010. This backdoor enables remote, unauthenticated attackers to execute arbitrary shell commands with root privileges on affected FTP servers. With a CVSS score of 9.8 (CRITICAL) and a FAUCET Risk Score of 99/100, the vulnerability presents a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. While not listed on the KEV catalog, a Metasploit module exists for exploitation, indicating readily available exploit code, despite minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.3.3CPE matchmatch criteria
cpe:2.3:a:proftpd:proftpd:1.3.3:c:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

9.3CRITICAL

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
5.09%
Probability of exploitation in next 30 days
EPSS Percentile
91.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Metasploit: ProFTPD 1.3.3c Backdoor Command Execution · Dec 2, 2010
This CVE's current EPSS score of 0.0509 is in the 86th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

advisories.checkpoint.com / defense/advisories/public/2011/cpai-2010-151.html
Third Party Advisory
github.com / proftpd/proftpd
Product
raw.githubusercontent.com / rapid7/metasploit-framework/master/modules/exploits/unix/ftp/proftpd_133c_backdoor.rb
ExploitThird Party Advisory
web.archive.org / web/20111107212129/http://rsync.proftpd.org
Release Notes
exploit-db.com / exploits/15662
ExploitVDB Entry
exploit-db.com / exploits/16921
ExploitVDB Entry
vulncheck.com / advisories/proftpd-backdoor-command-execution
Third Party Advisory
proftpd.org
Product