CVE-2000-0536

HIGH

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.

Affects 1 product across 1 vendor.

CVSS 2.07.5
EPSS2.1%
Percentile82th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity.
◆ AI Analysis — automated analysis, not human-reviewed

This vulnerability was disclosed in 2000. A high severity vulnerability affects Xinetd systems (CVE-2000-0536). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

BSID: BS-2000-GLOBAL-308832-H • Model: rule-based-v1 • Confidence: MEDIUM

Is this CVE in your environment?

BreachSpider monitors your ICS/OT environment for vulnerabilities like this one. No agents or network access required. Free to start.

Check My Environment →
Frequently Asked Questions
What is CVE-2000-0536?
This vulnerability was disclosed in 2000. A high severity vulnerability affects Xinetd systems (CVE-2000-0536). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
What is the CVSS score for CVE-2000-0536?
CVE-2000-0536 has CVSS 7.5 (High). Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P. EPSS: 2.1%.
Is CVE-2000-0536 actively exploited?
No confirmed active exploitation of CVE-2000-0536 as of 2026-06-20.
How do I remediate CVE-2000-0536?
Priority: MEDIUM. PSIRT: [email protected]
What systems are affected by CVE-2000-0536?
CVE-2000-0536 affects Xinetd Xinetd.
Vulnerability Details
CVE IDCVE-2000-0536
BSIDBS-2000-GLOBAL-308832-H BreachSpider Global ID
CVSS VectorAV:N/AC:L/Au:N/C:P/I:P/A:P
Published2000-06-04
Last Modified2026-06-16
ICS Relevance0%
SourceNVD
Official 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.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

Vulnerability details: 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. CVSS vector: AV:N/AC:L/Au:N/C:P/I:P/A:P.

Exploitation Likelihood: MINIMAL

Affected Products
VendorProductAffected Versions
Xinetd Xinetd 2.1.87 2.1.88 2.1.88_pre1 2.1.88_pre2 2.1.89_pre1 2.1.89_pre2
+3 more2.1.89_pre3 2.1.89_pre4 2.1.89_pre5
Remediation

No official vendor advisory link on record. See the CVE record →

Vendor PSIRT: [email protected]
Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 9639 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Modelrule-based-v1
ConfidenceMEDIUM
Enriched At2026-05-24
SHA-512 Audit Hash9e0ba7a86db2089fe54562c7cb671f372b65c1661491b8cdf91f5f8399ca2a9c12856df6e5b4d9744d93b3f36b23f6465990e04e51ec2e9c82f540af82cd7beb
Related CVEs affecting Xinetd
CVE-2001-0825 10.0 Buffer overflow in internal string handling routines of xinetd before 2.1.8.8... CVE-2013-4342 7.6 xinetd does not enforce the user and group configuration directives for TCPMU... CVE-2001-1389 7.5 Multiple vulnerabilities in xinetd 2.3.0 and earlier, and additional variants... CVE-2003-0211 5.0 Memory leak in xinetd 2.3.10 allows remote attackers to cause a denial of ser... CVE-2012-0862 4.3 builtins.c in Xinetd before 2.3.15 does not check the service type when the t...
View all Xinetd CVEs →

ICS/OT Vulnerability Intelligence for Your Environment

BreachSpider tracks 384,000+ CVEs and matches them to your ICS/OT assets by exact version, with AI analysis, NERC CIP mapping, and vendor PSIRT contacts.

Create a free account →