VDB-14559 · CVE-1999-0418 · GCVE-0-1999-0418

Host SMTP Server RCPT TO denial of service

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.
6.2	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in Host. The affected element is an unknown function of the component SMTP Server. Performing a manipulation of the argument RCPT TO results in denial of service. This vulnerability is cataloged as CVE-1999-0418. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Host (version now known). It has been classified as critical. This affects some unknown processing of the component SMTP Server. The manipulation of the argument RCPT TO with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on confidentiality, and availability. The summary by CVE is:

Denial of service in SMTP applications such as Sendmail, when a remote attacker (e.g. spammer) uses many "RCPT TO" commands in the same connection.

The weakness was shared 03/08/1999 as not defined posting (Bugtraq). It is possible to read the advisory at marc.theaimsgroup.com. This vulnerability is uniquely identified as CVE-1999-0418. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading eliminates this vulnerability.

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Productinfo

Name

Host

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/08/1999 🔍
03/08/1999 +0 days 🔍
06/20/2014 +5583 days 🔍
04/19/2026 +4320 days 🔍

Sourcesinfo

Advisory: marc.theaimsgroup.com
Status: Confirmed

CVE: CVE-1999-0418 (🔍)
GCVE (CVE): GCVE-0-1999-0418
GCVE (VulDB): GCVE-100-14559

Entryinfo

Created: 06/20/2014 22:51
Updated: 04/19/2026 00:07
Changes: 06/20/2014 22:51 (37), 04/04/2019 11:48 (9), 04/19/2026 00:07 (18)
Complete: 🔍
Cache ID: 216::103