System	Score	Found at
epss	0.91117	https://api.first.org/data/v1/epss?cve=CVE-2010-4221
epss	0.91316	https://api.first.org/data/v1/epss?cve=CVE-2010-4221
epss	0.91316	https://api.first.org/data/v1/epss?cve=CVE-2010-4221
epss	0.91316	https://api.first.org/data/v1/epss?cve=CVE-2010-4221
epss	0.91316	https://api.first.org/data/v1/epss?cve=CVE-2010-4221
epss	0.91316	https://api.first.org/data/v1/epss?cve=CVE-2010-4221
epss	0.91932	https://api.first.org/data/v1/epss?cve=CVE-2010-4221
epss	0.91932	https://api.first.org/data/v1/epss?cve=CVE-2010-4221

Reference id	Reference type	URL
		https://api.first.org/data/v1/epss?cve=CVE-2010-4221
		https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4221
602279		https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=602279
CVE-2010-4221	Exploit	https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/remote/15449.pl
CVE-2010-4221;OSVDB-68985	Exploit	https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/remote/16851.rb
CVE-2010-4221;OSVDB-68985	Exploit	https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/remote/16878.rb

Data source	Metasploit
Description	This module exploits a stack-based buffer overflow in versions of ProFTPD server between versions 1.3.2rc3 and 1.3.3b. By sending data containing a large number of Telnet IAC commands, an attacker can corrupt memory and execute arbitrary code. The Debian Squeeze version of the exploit uses a little ROP stub to indirectly transfer the flow of execution to a pool buffer (the cmd_rec "res" in "pr_cmd_read"). The Ubuntu version uses a ROP stager to mmap RWX memory, copy a small stub to it, and execute the stub. The stub then copies the remainder of the payload in and executes it. NOTE: Most Linux distributions either do not ship a vulnerable version of ProFTPD, or they ship a version compiled with stack smashing protection. Although SSP significantly reduces the probability of a single attempt succeeding, it will not prevent exploitation. Since the daemon forks in a default configuration, the cookie value will remain the same despite some attempts failing. By making repeated requests, an attacker can eventually guess the cookie value and exploit the vulnerability. The cookie in Ubuntu has 24-bits of entropy. This reduces the effectiveness and could allow exploitation in semi-reasonable amount of time.
Note	Stability: - crash-service-down SideEffects: - ioc-in-logs Reliability: - unreliable-session
Ransomware campaign use	Unknown
Source publication date	Nov. 1, 2010
Platform	Linux
Source URL	https://github.com/rapid7/metasploit-framework/tree/master/modules/exploits/linux/ftp/proftp_telnet_iac.rb

Data source	Exploit-DB
Date added	Nov. 7, 2010
Description	ProFTPd IAC 1.3.x - Remote Command Execution
Ransomware campaign use	Known
Source publication date	Nov. 7, 2010
Exploit type	remote
Platform	linux
Source update date	Dec. 4, 2016

There are no known vectors.

Percentile	0.99638
EPSS Score	0.91117
Published At	Aug. 3, 2025, 12:55 p.m.

Date	Actor	Action	Source	VulnerableCode Version
2025-07-31T11:42:24.385314+00:00	EPSS Importer	Import	https://epss.cyentia.com/epss_scores-current.csv.gz	37.0.0