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CVE-2000-0586

36
FAUCET Score

CVE-2000-0586 describes a critical buffer overflow vulnerability in Dalnet IRC server version 4.6.5. This flaw allows unauthenticated remote attackers to trigger a denial of service or execute arbitrary code by sending a specially crafted SUMMON command. With a CVSS score of 10.0 (HIGH), the vulnerability is easily exploitable over the network with no authentication, leading to complete compromise of confidentiality, integrity, and availability. While not currently listed in CISA's KEV catalog, public exploit code exists, and its high FAUCET Risk Score indicates significant potential impact, despite a lack of recent community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
4.6.5CPE matchmatch criteria
cpe:2.3:a:dalnet:ircd:4.6.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

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

Exploit Intelligence

EPSS Score
4.82%
Probability of exploitation in next 30 days
EPSS Percentile
91.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-20043 · Jun 29, 2000
This CVE's current EPSS score of 0.0482 is in the 84th 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

archives.neohapsis.com / archives/vuln-dev/2000-q2/1092.html
securityfocus.com / bid/1404