CVE-2011-2593

Name: CVE-2011-2593
Creator: NVD / NIST
Published: 2014-08-12T20:55:02.527+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.99%

Last modified Jun 16, 2026

CVE-2011-2593 is a vulnerability of currently unknown severity. Integer overflow in the StartEpa method in the nsepacom ActiveX control (nsepa.exe) in Citrix Access Gateway Enterprise Edition Plug-in for Windows 9.x before 9.3-57.5 and 10.0 before 10.0-69.4 allows remote attackers to execute arbitrary code via a crafted Content-Length HTTP header, which triggers a heap-based buffer overflow.. EPSS estimates a 3.99% chance of exploitation in the next 30 days.

Description

Integer overflow in the StartEpa method in the nsepacom ActiveX control (nsepa.exe) in Citrix Access Gateway Enterprise Edition Plug-in for Windows 9.x before 9.3-57.5 and 10.0 before 10.0-69.4 allows remote attackers to execute arbitrary code via a crafted Content-Length HTTP header, which triggers a heap-based buffer overflow.

Metrics

EPSS Probability

3.99%

89.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-189

Affected Software

Vendor	Product	Versions	Update
Citrix	Access Gateway Plug-In	<= 9.3	49-5
Citrix	Access Gateway Plug-In	10.0	—

References

Timeline

Published: Aug 12, 2014
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-2593?

How severe is CVE-2011-2593?

Severity scoring for CVE-2011-2593 is pending analysis. The EPSS model estimates a 3.99% probability of exploitation in the next 30 days.

How do I fix CVE-2011-2593?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-2593?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST