CVE-2000-0244

CRITICAL ⚠ Exploit

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

Affects 2 products across 1 vendor.

CVSS 2.010.0
EPSS2.3%
Percentile83th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity.
◆ AI Analysis — automated analysis, not human-reviewed

The Citrix ICA protocol uses weak XOR encryption for user authentication, which can be exploited to intercept and decrypt authentication credentials, leading to unauthorized access.

BSID: BS-2000-GLOBAL-073817-C • Model: /workspace/models/qwen2.5-coder-32b-instruct-bf16 • Confidence: HIGH

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Frequently Asked Questions
What is CVE-2000-0244?
The Citrix ICA protocol uses weak XOR encryption for user authentication, which can be exploited to intercept and decrypt authentication credentials, leading to unauthorized access.
What is the CVSS score for CVE-2000-0244?
CVE-2000-0244 has CVSS 10.0 (Critical). Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. EPSS: 2.3%.
Is CVE-2000-0244 actively exploited?
Public exploit available for CVE-2000-0244. Exploitation risk elevated.
How do I remediate CVE-2000-0244?
Priority: IMMEDIATE. PSIRT: [email protected]
What systems are affected by CVE-2000-0244?
CVE-2000-0244 affects Citrix Metaframe, Winframe.
Vulnerability Details
CVE IDCVE-2000-0244
BSIDBS-2000-GLOBAL-073817-C BreachSpider Global ID
CVSS VectorAV:N/AC:L/Au:N/C:C/I:C/A:C
Published2000-03-29
Last Modified2026-06-16
ICS Relevance0%
Domains
NETWORK-INFRA
SourceNVD
Official Description

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

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

An attacker can intercept the network traffic between the Citrix client and server, use the XOR encryption weakness to decrypt the authentication credentials, and then use these credentials to gain unauthorized access to the system.

Exploitation Likelihood: CRITICAL

Affected Products
VendorProductAffected Versions
Citrix Metaframe ≤ 1.8
Citrix Winframe 3.5_1.8_for_windows_nt
Remediation

No official vendor advisory link on record. See the CVE record →

Vendor PSIRT: [email protected]
Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 9704 Days
CISA known-exploitedNot in KEV catalog
Public Exploit⚠ Available — Reference
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Model/workspace/models/qwen2.5-coder-32b-instruct-bf16
ConfidenceHIGH
Enriched At2026-05-24
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