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Vulnerability record · CVE-2000-0536 · published 4 June 2000

CVE-2000-0536: Xinetd vulnerability

XXinetd · Xinetd

xinetd 2.1.8.x does not properly restrict connections if hostnames are used for access control and the connecting host does not have a reverse DNS entry.

7.5 CVSS 2.0 High EPSS 2.1% · top 18.7%
7.5CVSS 2.0 base score
2.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

xinetd 2.1.8.x does not properly restrict connections if hostnames are used for access control and the connecting host does not have a reverse DNS entry.

AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.debian.org/security/2000/20000619
http://www.securityfocus.com/bid/1381 ExploitPatchVendor Advisory
http://www.synack.net/xinetd/ PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/4986
http://www.debian.org/security/2000/20000619
http://www.securityfocus.com/bid/1381 ExploitPatchVendor Advisory
http://www.synack.net/xinetd/ PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/4986

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2001-0825Xinetd vulnerabilityBuffer overflow in internal string handling routines of xinetd before 2.1.8.8 allows remote attackers to execute arbitrary commands via a length argu…EPSS 3.6%7.6CVE-2013-4342Xinetd permissions and access controls vulnerabilityxinetd does not enforce the user and group configuration directives for TCPMUX services, which causes these services to be run as root and makes it e…EPSS 6.4%7.5CVE-2001-1389Xinetd vulnerabilityMultiple vulnerabilities in xinetd 2.3.0 and earlier, and additional variants until 2.3.3, may allow remote attackers to cause a denial of service or…EPSS 3.3%5.0CVE-2003-0211Xinetd vulnerabilityMemory leak in xinetd 2.3.10 allows remote attackers to cause a denial of service (memory consumption) via a large number of rejected connections.EPSS 8.9%4.3CVE-2012-0862Xinetd improper input validation vulnerabilitybuiltins.c in Xinetd before 2.3.15 does not check the service type when the tcpmux-server service is enabled, which exposes all enabled services and …EPSS 2.8%3.6CVE-2001-1322Xinetd vulnerabilityxinetd 2.1.8 and earlier runs with a default umask of 0, which could allow local users to read or modify files that are created by an application tha…EPSS 0.36%2.1CVE-2002-0871Xinetd vulnerabilityxinetd 2.3.4 leaks file descriptors for the signal pipe to services that are launched by xinetd, which could allow those services to cause a denial o…EPSS 0.37%

Source: NIST National Vulnerability Database (record CVE-2000-0536), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.