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CVE-2000-0244

37
FAUCET Score

CVE-2000-0244 describes a critical vulnerability in Citrix Metaframe and Winframe products, where the ICA protocol employs weak XOR encryption for user authentication. This flaw allows for unauthenticated remote attackers to achieve complete compromise of confidentiality, integrity, and availability, as indicated by its CVSS score of 10.0. While there is no evidence of active exploitation in the wild or Metasploit modules, an exploit demonstrating weak encryption has been published on ExploitDB. Despite its age and high severity, there is no recorded community discussion or media coverage for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.8CPE matchmatch criteria
cpe:2.3:a:citrix:metaframe:*:*:windows_2000:*:*:*:*:*
<= 1.8CPE matchmatch criteria
cpe:2.3:a:citrix:metaframe:*:*:windows_nt_4.0_tse:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:citrix:metaframe:1.0:*:unix:*:*:*:*:*
3.5_1.8_for_windows_ntCPE matchmatch criteria
cpe:2.3:a:citrix:winframe:3.5_1.8_for_windows_nt:*:*:*:*:*:*:*

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
2.33%
Probability of exploitation in next 30 days
EPSS Percentile
81.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
ExploitDB: EDB-19821 · Mar 29, 2000
This CVE's current EPSS score of 0.0233 is in the 67th percentile among its peer group of 51,485 CVEs.

Social Chatter

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

securityfocus.com / bid/1077
ExploitPatchVendor Advisory
securityfocus.com / templates/archive.pike