VYPR
Get started
← All advisories
Unrated severityNVD Advisory· Published Jul 21, 2011· Updated Apr 29, 2026

CVE-2011-2883

CVE-2011-2883

Description

The NSEPA.NsepaCtrl.1 ActiveX control in nsepa.ocx in Citrix Access Gateway Enterprise Edition 8.1 before 8.1-67.7, 9.0 before 9.0-70.5, and 9.1 before 9.1-96.4 attempts to validate signed DLLs by checking the certificate subject, not the signature, which allows man-in-the-middle attackers to execute arbitrary code via HTTP header data referencing a DLL that was signed with a crafted certificate.

Affected products

3
  • Citrix Systems/Access Gateway3 versions
    cpe:2.3:a:citrix:access_gateway:8.1:*:enterprise:*:*:*:*:*+ 2 more
    • cpe:2.3:a:citrix:access_gateway:8.1:*:enterprise:*:*:*:*:*
    • cpe:2.3:a:citrix:access_gateway:9.0:*:enterprise:*:*:*:*:*
    • cpe:2.3:a:citrix:access_gateway:9.1:*:enterprise:*:*:*:*:*

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

1

News mentions

0

No linked articles in our index yet.