Vulnerability Report

CVE-2011-2883

RCE

Title: Citrix Access Gateway RCE

RCE

Proof Of Concept

No public PoC currently indexed for CVE-2011-2883.

CWE Category CWE-20
Published Date Jul 21, 2011
Modified Date Jun 16, 2026
Exploit Status Not Found
Score 9.3 CVSS v2.0
Exploit Probability (EPSS)
1.53%

Vulnerability Summary

CVE-2011-2883: 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.

Impacted Vendors

O
okta 1
C
citrix 1

Reference Links

http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=928 http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=928
CVSS v2.0
Source Entity [email protected]
Severity HIGH
9.3
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:M/Au:N/C:C/I:C/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2011-2883 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A
Complexity N/A
Privileges N/A
Interaction NONE
CVSS Vector String AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected Stack

No specific products linked.