Host FTP Server Anonymous improper authentication

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.0$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Host. This affects an unknown function of the component FTP Server. Such manipulation leads to improper authentication (Anonymous). This vulnerability is referenced as CVE-1999-0497. It is possible to launch the attack remotely. Furthermore, an exploit is available. This vulnerability has historical importance owing to its background and reception. Modifying the configuration settings is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Host (affected version unknown). Affected by this issue is an unknown functionality of the component FTP Server. The manipulation with an unknown input leads to a improper authentication vulnerability (Anonymous). Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, and integrity. CVE summarizes:

Anonymous FTP is enabled.

The weakness was published 01/01/1999. This vulnerability is handled as CVE-1999-0497. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/26/2025). This vulnerability has a historic impact due to its background and reception.

It is declared as highly functional. The vulnerability scanner Nessus provides a plugin with the ID 10079 (Anonymous FTP Enabled), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FTP and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 27001 (FTP users with Blank Password Allowed).

It is possible to mitigate the problem by applying the configuration setting .Addressing this vulnerability is possible by firewalling tcp/21 (ftp). The best possible mitigation is suggested to be the change of configuration settings. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 2232.

The vulnerability is also documented in the databases at X-Force (543), Tenable (10079), SecurityFocus (BID 83206†) and Vulnerability Center (SBV-406†). Similar entries are available at VDB-14334, VDB-14333, VDB-14331 and VDB-14329. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.3
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Name: Anonymous
Class: Improper authentication / Anonymous
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 10079
Nessus Name: Anonymous FTP Enabled
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 900600
OpenVAS Name: Anonymous FTP Checking
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Config
Status: 🔍

0-Day Time: 🔍

Firewalling: 🔍
TippingPoint: 🔍

Timelineinfo

01/01/1999 🔍
01/01/1999 +0 days 🔍
01/01/1999 +0 days 🔍
06/22/1999 +172 days 🔍
12/17/2002 +1274 days 🔍
06/19/2014 +4202 days 🔍
10/26/2025 +4146 days 🔍

Sourcesinfo

Status: Not defined

CVE: CVE-1999-0497 (🔍)
GCVE (CVE): GCVE-0-1999-0497
GCVE (VulDB): GCVE-100-14330
X-Force: 543
SecurityFocus: 83206
Vulnerability Center: 406 - FTP Server Accepts Anonymous Logins, Medium

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 06/20/2014 00:39
Updated: 10/26/2025 00:35
Changes: 06/20/2014 00:39 (59), 05/06/2019 17:05 (9), 10/26/2025 00:35 (22)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to know what is going to be exploited?

We predict KEV entries!