CVE-2016-6493

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Summary

CVECVE-2016-6493
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-08-19 21:59:16 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionCitrix XenApp 6.x before 6.5 HRP07 and 7.x before 7.9 and Citrix XenDesktop before 7.9 might allow attackers to weaken an unspecified security mitigation via vectors related to memory permission.

Risk And Classification

Primary CVSS: v3.0 9.8 CRITICAL from [email protected]

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.021690000 probability, percentile 0.844110000 (date 2026-05-06)

Problem Types: CWE-254 | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary9.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary7.5AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Citrix Xenapp 6.0.0.0 All All All
Application Citrix Xenapp 6.5.0.0 All All All
Application Citrix Xenapp 7.0.0.0 All All All
Application Citrix Xenapp 7.1.0.0 All All All
Application Citrix Xenapp 7.5.0.0 All All All
Application Citrix Xenapp 7.6.0.0 All All All
Application Citrix Xenapp 7.7.0.0 All All All
Application Citrix Xenapp 7.8.0.0 All All All
Application Citrix Xendesktop All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Multiple Citrix Products CVE-2016-6493 Memory Permission Security Weakness af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Memory Permission Weakness in Citrix XenApp and XenDesktop af854a3a-2127-422b-91ae-364da2661108 support.citrix.com Vendor Advisory
Citrix XenApp Memory Permission Weakness Lets Users Bypass Security Mitigations - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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