CVE-2009-2453: n/a vulnerability

CVE-2009-2453: Citrix XenApp (formerly Presentation Server) 4.5 Hotfix Rollup Pack 3 does not apply an access policy when...

Citrix XenApp (formerly Presentation Server) 4.5 Hotfix Rollup Pack 3 does not apply an access policy when it is defined with the Access Gateway Advanced Edition filters, which allows attackers to bypass intended access restrictions via unknown vectors.

UnknownCVSS not scoredNot KEV-listedUpdatedSep 16, 2024, 18:29 UTC (UTC+00:00)

Security readout for executives and security teams

This issue means a Citrix XenApp 4.5 Hotfix Rollup Pack 3 access policy may not be enforced when built with Access Gateway Advanced Edition filters. If an organization relied on those filters, intended access restrictions could be bypassed. The public bundle does not provide severity scoring, exploit details, or confirmed active exploitation. Exposure appears limited to environments running Citrix XenApp/Presentation Server 4.5 Hotfix Rollup Pack 3 where Access Gateway Advanced Edition filters define access policy. The bundle does not identify other affected Citrix versions or products. Prioritize this if legacy Citrix XenApp 4.5 HRP3 remains in production, especially for externally reachable or partner-facing access. Otherwise, treat it as an inventory and legacy-risk confirmation item. Mitigation focus: Review Citrix CTX118792 for vendor correction or replacement guidance.; Identify policies relying on Access Gateway Advanced Edition filters.; Reduce reliance on affected filter-based controls until vendor guidance is applied..

Prepared: Jun 28, 2026, 10:45 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jul 14, 2009, 14:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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1Source links

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Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

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Weakness

CWE details

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