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CVE-2000-0536

20
FAUCET Score

CVE-2000-0536 describes a vulnerability in xinetd 2.1.8.x where access control based on hostnames can be bypassed if the connecting host lacks a reverse DNS entry. This allows unauthorized connections. With a CVSS score of 7.5 (HIGH), this vulnerability is easily exploitable over the network with no authentication, potentially leading to full compromise of confidentiality, integrity, and availability. There is no known exploit intelligence, active exploitation, or significant community discussion surrounding this older CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.1.87CPE matchmatch criteria
cpe:2.3:a:xinetd:xinetd:2.1.87:*:*:*:*:*:*:*
2.1.88CPE matchmatch criteria
cpe:2.3:a:xinetd:xinetd:2.1.88:*:*:*:*:*:*:*
2.1.88_pre1CPE matchmatch criteria
cpe:2.3:a:xinetd:xinetd:2.1.88_pre1:*:*:*:*:*:*:*
2.1.88_pre2CPE matchmatch criteria
cpe:2.3:a:xinetd:xinetd:2.1.88_pre2:*:*:*:*:*:*:*
2.1.89_pre1CPE matchmatch criteria
cpe:2.3:a:xinetd:xinetd:2.1.89_pre1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.14%
Probability of exploitation in next 30 days
EPSS Percentile
80.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0214 is in the 65th percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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