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Case File

CVE-2011-2883

HIGH · CVSS 9.3 EPSS 1.53%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2011-07-21 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

CVE
CVE-2011-2883
Severity
HIGH
CVSS
9.3
EPSS
1.53%
Citrix

Original NVD 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.