CVE-2009-2213

The default configuration of the Security global settings on the Citrix NetScaler Access Gateway appliance with Enterprise Edition firmware 9.0, 8.1, and earlier specifies Allow for the Default Authorization Action option, which might allow remote authenticated users to bypass intended access restrictions.

Published: 2009-06-25 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-2213 is rated Moderate Risk (55.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.02%). EPSS rose +1.67% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2009-2213

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.35% 2.02% +1.67%
2 2026-01-04 0.07% 0.35% +0.27%
3 2025-03-30 — 0.07% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-2213

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 3.6 [email protected]
6.3 2.0 MEDIUM
AV:N/AC:M/Au:S/C:C/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 6.8 6.9 [email protected]

Weakness enumeration for CVE-2009-2213

Affected software / configurations for CVE-2009-2213

Vendor Product Version Raw CPE
citrix netscaler_access_gateway_firmware <= 8.1 cpe:2.3:o:citrix:netscaler_access_gateway_firmware:*:*:*:*:*:*:*:*
citrix netscaler_access_gateway_firmware 7.0 cpe:2.3:o:citrix:netscaler_access_gateway_firmware:7.0:*:*:*:*:*:*:*
citrix netscaler_access_gateway_firmware 8.0 cpe:2.3:o:citrix:netscaler_access_gateway_firmware:8.0:*:*:*:*:*:*:*
citrix netscaler_access_gateway_firmware 9.0 cpe:2.3:o:citrix:netscaler_access_gateway_firmware:9.0:*:*:*:*:*:*:*
citrix netscaler_access_gateway — cpe:2.3:h:citrix:netscaler_access_gateway:-:-:enterprise:*:*:*:*:*

References for CVE-2009-2213

URL Tags
http://support.citrix.com/article/CTX118770 Broken Link Vendor Advisory
http://www.securityfocus.com/bid/35422 Broken Link Third Party Advisory VDB Entry
http://www.vupen.com/english/advisories/2009/1641 Permissions Required
https://exchange.xforce.ibmcloud.com/vulnerabilities/51274 Third Party Advisory VDB Entry
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