Vulnerability Report

CVE-2011-2882

Title: Citrix Access Gateway RCE

Memory Corruption

Proof Of Concept

PoC Available for CVE-2011-2882

CWE Category CWE-119

Published Date Jul 21, 2011

Modified Date Jun 16, 2026

Exploit Status Available

Score 9.3 CVSS v2.0

Exploit Probability (EPSS)

56.37%

Vulnerability Summary

CVE-2011-2882: Stack-based buffer overflow in 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 allows remote attackers to execute arbitrary code via crafted HTTP header data.

Impacted Vendors

citrix 1

okta 1

Reference Links

http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=929 http://securityreason.com/securityalert/8358 http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=929 http://securityreason.com/securityalert/8358

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-2011-2882 Exploits & PoCs (Proof Of Concept)

Exploit-DB https://www.exploit-db.com/exploits/17762

View Code

June 16, 2026 MODIFIED

Vulnerability data updated via NVD.

April 29, 2026 MODIFIED

Vulnerability data updated via NVD.

April 11, 2025 MODIFIED

Vulnerability data or affected products updated.

July 21, 2011 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.