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Vulnerability record · CVE-2016-6493 · published 19 August 2016

CVE-2016-6493: Citrix xenapp vulnerability

Citrix · Xenapp

Citrix 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.

9.8 CVSS 3.0 Critical EPSS 2.2% · top 18.3% CWE-254 · CWE-254
9.8CVSS 3.0 base score, v2 7.5
2.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

Citrix 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.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://support.citrix.com/article/CTX215460 Vendor Advisory
http://www.securityfocus.com/bid/92316 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1036539 Third Party AdvisoryVDB Entry
http://support.citrix.com/article/CTX215460 Vendor Advisory
http://www.securityfocus.com/bid/92316 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1036539 Third Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.3CVE-2012-5161Citrix xenapp vulnerabilityThe XML Service interface in Citrix XenApp 6.5 and 6.5 Feature Pack 1 allows remote attackers to execute arbitrary code via unspecified vectors.EPSS 5.7%8.8CVE-2020-8283Citrix virtual apps and desktops improper privilege management vulnerabilityAn authorised user on a Windows host running Citrix Universal Print Server can perform arbitrary command execution as SYSTEM in CVAD versions before …EPSS 2.7%8.8CVE-2020-8269Citrix virtual apps and desktops improper privilege management vulnerabilityAn unprivileged Windows user on the VDA can perform arbitrary command execution as SYSTEM in CVAD versions before 2009, 1912 LTSR CU1 hotfixes CTX285…EPSS 2.7%7.8CVE-2021-22928Citrix virtual apps and desktops vulnerabilityA vulnerability has been identified in Citrix Virtual Apps and Desktops that could, if exploited, allow a user of a Windows VDA that has either Citri…EPSS 0.25%7.5CVE-2016-4810Citrix xenapp improper access control vulnerabilityCitrix Studio before 7.6.1000, Citrix XenDesktop 7.x before 7.6 LTSR Cumulative Update 1 (CU1), and Citrix XenApp 7.5 and 7.6 allow attackers to set …EPSS 0.86%7.5CVE-2009-2453Citrix presentation server permissions and access controls vulnerabilityCitrix XenApp (formerly Presentation Server) 4.5 Hotfix Rollup Pack 3 does not apply an access policy when it is defined with the Access Gateway Adva…EPSS 1.4%6.8CVE-2008-4676Citrix access essentials permissions and access controls vulnerabilityUnspecified vulnerability in Citrix XenApp (formerly Presentation Server) 4.5 Feature Pack 1 and earlier, Presentation Server 4.0, and Access Essenti…EPSS 0.29%5.8CVE-2013-6077Citrix xendesktop permissions and access controls vulnerabilityCitrix XenDesktop 7.0, when upgraded from XenDesktop 5.x, does not properly enforce policy rule permissions, which allows remote attackers to bypass …EPSS 1.7%

Source: NIST National Vulnerability Database (record CVE-2016-6493), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.