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CVE-2000-0623

26
FAUCET Score

CVE-2000-0623 describes a critical buffer overflow vulnerability in O'Reilly WebSite Professional web server versions 2.4 and earlier. This flaw allows remote, unauthenticated attackers to execute arbitrary commands on the affected server by sending a specially crafted, excessively long GET request or Referrer header. With a CVSS score of 10.0 (HIGH), this vulnerability presents a severe risk, enabling complete compromise of confidentiality, integrity, and availability. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the potential for a full system takeover warrants attention for any systems still running this outdated software.

Impacted Technologies

VendorProductVersion(s)CPE
2.3.18CPE matchmatch criteria
cpe:2.3:a:oreilly:website_professional:2.3.18:*:*:*:*:*:*:*
2.4CPE matchmatch criteria
cpe:2.3:a:oreilly:website_professional:2.4:*:*:*:*:*:*:*
2.4.9CPE matchmatch criteria
cpe:2.3:a:oreilly:website_professional:2.4.9:*:*:*:*:*:*:*

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
5.17%
Probability of exploitation in next 30 days
EPSS Percentile
91.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0517 is in the 85th percentile among its peer group of 51,466 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

ntbugtraq.com / default.asp
PatchVendor Advisory
securityfocus.com / bid/1492
ExploitPatchVendor Advisory