How severe is CVE-2000-0244?

CVE-2000-0244 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2000-0244 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-0244?

CVE-2000-0244 primarily affects Citrix Metaframe. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2000-0244?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2000-0244 published?

CVE-2000-0244 was published on 2000-03-29 and last updated on 2026-06-16.

CVE-2000-0244

CVE-2000-0244 is a critical-severity vulnerability in Citrix Metaframe with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Citrix Metaframe
Published: 2000-03-29
Last modified: 2026-06-16

Description

The Citrix ICA (Independent Computing Architecture) protocol uses weak encryption (XOR) for user authentication.

Frequently asked questions

What is CVE-2000-0244?: The Citrix ICA (Independent Computing Architecture) protocol uses weak encryption (XOR) for user authentication.
How severe is CVE-2000-0244?: CVE-2000-0244 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2000-0244 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0244?: CVE-2000-0244 primarily affects Citrix Metaframe. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2000-0244?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2000-0244 published?: CVE-2000-0244 was published on 2000-03-29 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:citrix:metaframe:*:*:windows_2000:*:*:*:*:*
cpe:2.3:a:citrix:metaframe:*:*:windows_nt_4.0_tse:*:*:*:*:*
cpe:2.3:a:citrix:metaframe:1.0:*:unix:*:*:*:*:*
cpe:2.3:a:citrix:winframe:3.5_1.8_for_windows_nt:*:*:*:*:*:*:*

More vulnerabilities in Citrix Metaframe

CVE-2007-2850 — Critical (CVSS 10.0): The Session Reliability Service (XTE) in Citrix MetaFrame Presentation Server 3.0, Presentation Server 4.0, and Access…
CVE-2006-5821 — High (CVSS 7.5): Heap-based buffer overflow in the IMA_SECURE_DecryptData1 function in ImaSystem.dll for Citrix MetaFrame XP 1.0 and…
CVE-2005-3134 — High (CVSS 7.5): Citrix Metaframe Presentation Server 3.0 and 4.0 allows remote attackers to bypass policy restrictions by downloading…
CVE-2001-0908 — High (CVSS 7.5): CITRIX Metaframe 1.8 logs the Client Address (IP address) that is provided by the client instead of obtaining it from…
CVE-2007-0444 — High (CVSS 7.2): Stack-based buffer overflow in the print provider library (cpprov.dll) in Citrix Presentation Server 4.0, MetaFrame…
CVE-2006-3779 — Medium (CVSS 6.5): Citrix MetaFrame up to XP 1.0 Feature 1, except when running on Windows Server 2003, installs a registry key with an…

All CVEs affecting Citrix Metaframe →