CVE-2020-13998

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Published Jun 11, 2020 CVSS 3.1 · 7.5 High EPSS 1.4% KEV · Not listed

Description

Citrix XenApp 6.5, when 2FA is enabled, allows a remote unauthenticated attacker to ascertain whether a user exists on the server, because the 2FA error page only occurs after a valid username is entered. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:citrix:xenapp:6.5.0.0:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact Partial

Integrity Impact None

Availability Impact None

This CVE is not in the KEV list.

Exploit prediction score: 1.4% (1.424% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://gist.github.com/kampji/11e259d68ad98a6f0f898132f1961a96

History

Feb 25, 2026 7:15 AM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics	cvssV3_1 `{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}`	ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}` cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}`

Subscriptions

Citrix Xenapp

Weaknesses

Sources

CVE record Updated: Aug 4, 2024, 12:32 PM

Status: PUBLISHED
Assigner: mitre
Published: Jun 11, 2020, 1:59 AM
Updated: Aug 4, 2024, 12:32 PM
Reserved: Jun 9, 2020, 12:00 AM

View source JSON

Vulnrichment Updated: Aug 4, 2024, 12:32 PM

Updated: Aug 4, 2024, 12:32 PM

NVD Updated: Jun 17, 2026, 2:54 AM

Status: Modified
Published: Jun 11, 2020, 2:15 AM
Modified: Jun 17, 2026, 2:54 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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