CVE-2011-10005VulnerabilityPublished 16 Jan 2024Updated 2 Jun 2025

CVE-2011-10005: EasyFTP · Buffer Overflow

Affects EasyFTPSource CVE Database V5

Not known to be exploited · public exploit available (Metasploit) · CVSS 6.3 Medium.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 3.1 base score

6.3Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 3.5% chance of exploitation in 30 days – higher than 89% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: Low

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 16 Jan 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: evidence found.
1 Metasploit module
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
npmeasyftp`pkg:npm/easyftp`Other threats	Affected =1.7.0.2	Fixed in–

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AI-suggested

Given the absence of an official patch, European organizations should take immediate steps to mitigate the risk. First, identify and inventory all instances of EasyFTP 1.7.0.2 within the network. If possible, disable or isolate these servers from external access, especially from untrusted networks. Employ network segmentation and firewall rules to restrict access to the FTP service only to trusted hosts and users. Consider replacing EasyFTP with a modern, actively maintained FTP server that supports secure protocols like FTPS or SFTP. If replacement is not immediately feasible, implement intrusion detection/prevention systems (IDS/IPS) with signatures targeting buffer overflow attempts against FTP services. Regularly monitor logs for suspicious MKD command activity or unusual FTP behavior. Additionally, enforce strict access controls and limit privileges for FTP users to minimize potential damage. Conduct penetration testing to verify the effectiveness of mitigations. Finally, maintain up-to-date backups of critical data to enable recovery in case of compromise.

Description

A vulnerability, which was classified as critical, was found in EasyFTP 1.7.0.2. Affected is an unknown function of the component MKD Command Handler. The manipulation leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-250716.

Impact

For European organizations, the impact of this vulnerability depends largely on the presence and use of EasyFTP 1.7.0.2 within their infrastructure. FTP servers are often used for file transfers, including sensitive data exchange. Exploitation could allow attackers to execute arbitrary code remotely, potentially leading to unauthorized access to sensitive files, data exfiltration, or disruption of services. This could affect confidentiality by exposing sensitive information, integrity by allowing unauthorized modification of files, and availability by causing service outages or crashes. Organizations in sectors with strict data protection requirements, such as finance, healthcare, and government, could face regulatory and reputational damage if exploited. The lack of a vendor patch increases the risk, as organizations may need to rely on mitigating controls or consider migrating to alternative FTP solutions. The medium CVSS score suggests moderate ease of exploitation and impact, but the remote nature and absence of user interaction elevate the threat level. Additionally, since FTP is often used in legacy systems, some European organizations with older infrastructure might be particularly vulnerable if they have not updated or replaced EasyFTP servers.

Summary

CVE-2011-10005 is a buffer overflow vulnerability identified in EasyFTP version 1.7.0.2, specifically within the MKD (Make Directory) Command Handler component. Buffer overflow vulnerabilities occur when a program writes more data to a buffer than it can hold, potentially overwriting adjacent memory. This can lead to arbitrary code execution, crashes, or other unpredictable behavior. In this case, the vulnerability allows remote attackers to send specially crafted MKD commands to the EasyFTP server, causing a buffer overflow. The vulnerability is exploitable remotely without requiring user interaction, but it does require some level of privileges (PR:L) as indicated by the CVSS vector. The CVSS 3.1 base score is 6.3, categorized as medium severity, reflecting the potential for confidentiality, integrity, and availability impacts, but with some exploitation constraints. No patches or vendor fixes are currently linked, and no known exploits are reported in the wild, although proof-of-concept exploits have been publicly disclosed. The vulnerability is classified under CWE-120, which relates to classic buffer overflow issues, a well-known and critical class of software vulnerabilities that can lead to remote code execution or denial of service. Given the age of the product version and the lack of vendor project information, it is likely that EasyFTP is a legacy or niche FTP server software. The vulnerability's remote exploitability and impact on all three security pillars (confidentiality, integrity, availability) make it a significant risk for any organization still running this software version.

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #11
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
Requirements · Language Selection
Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Operation · Build and Compilation · Environment Hardening
Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index…
OWASP Cheat Sheets
Docker Security (opens in a new tab)
XML Security (opens in a new tab)
OWASP ASVS 4.0.3
V5.4.1 (opens in a new tab)
V14.1.2 (opens in a new tab)
V13.3.1 (opens in a new tab)
Attack patterns
Buffer Overflow via Environment Variables (opens in a new tab)
Overflow Buffers (opens in a new tab)
Client-side Injection-induced Buffer Overflow (opens in a new tab)
Filter Failure through Buffer Overflow (opens in a new tab)
MIME Conversion (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 3 Jul 2025, 16:40 UTC

Public exploits and detection1 Metasploit module

WeaknessesCWE-120

Technical details

References

Community reviews

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