Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2000-0550

15
FAUCET Score

CVE-2000-0550 describes a double-free vulnerability in the Kerberos 4 Key Distribution Center (KDC) program, affecting various Cygnus and MIT Kerberos products. This flaw allows remote, unauthenticated attackers to trigger a denial of service. With a CVSS score of 5.0 (Medium), the vulnerability is easily exploitable over the network with low attack complexity, though it only impacts availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.0CPE matchmatch criteria
cpe:2.3:a:cygnus:cygnus_network_security:4.0:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:a:cygnus:kerbnet:5.0:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:mit:kerberos:4.0:*:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:mit:kerberos_5:1.0:*:*:*:*:*:*:*
1.1CPE matchmatch criteria
cpe:2.3:a:mit:kerberos_5:1.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.40%
Probability of exploitation in next 30 days
EPSS Percentile
82.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0240 is in the 73rd percentile among its peer group of 23,690 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, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Advisories (1)

redhatCVE-2000-0550

security flaw

Jun 9, 2000

References

archives.neohapsis.com / archives/bugtraq/2000-06/0064.html
ciac.llnl.gov / ciac/bulletins/k-051.shtml
web.mit.edu / kerberos/www/advisories/krb4kdc.txt
cert.org / advisories/CA-2000-11.html
PatchThird Party AdvisoryUS Government Resource
redhat.com / support/errata/RHSA-2000-031.html
securityfocus.com / bid/1465