CVE-2007-4013
CVE-2007-4013 is a critical-severity vulnerability in Citrix Access Gateway with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Critical (CVSS 2.0 base score 9.3)
- EPSS exploit prediction: 4% (90th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Citrix Access Gateway
- Published:
- Last modified:
Description
Multiple unspecified vulnerabilities in (1) Net6Helper.DLL (aka Net6Launcher Class) 4.5.2 and earlier, (2) npCtxCAO.dll (aka Citrix Endpoint Analysis Client) in a Firefox plugin directory, and (3) a second npCtxCAO.dll (aka CCAOControl Object) before 4.5.0.0 in Citrix Access Gateway Standard Edition before 4.5.5 and Advanced Edition before 4.5 HF1 have unknown impact and attack vectors, possibly related to buffer overflows. NOTE: vector 3 might overlap CVE-2007-3679.
Frequently asked questions
- What is CVE-2007-4013?
- Multiple unspecified vulnerabilities in (1) Net6Helper.DLL (aka Net6Launcher Class) 4.5.2 and earlier, (2) npCtxCAO.dll (aka Citrix Endpoint Analysis Client) in a Firefox plugin directory, and (3) a second npCtxCAO.dll (aka CCAOControl Object) before 4.5.0.0 in Citrix Access Gateway Standard Edition before 4.5.5 and Advanced Edition before 4.5 HF1 have unknown impact and attack vectors, possibly related to buffer overflows. NOTE: vector 3 might overlap CVE-2007-3679.
- How severe is CVE-2007-4013?
- CVE-2007-4013 has a CVSS 2.0 base score of 9.3, rated critical severity.
- Is CVE-2007-4013 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2007-4013?
- CVE-2007-4013 primarily affects Citrix Access Gateway. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2007-4013?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2007-4013 published?
- CVE-2007-4013 was published on 2007-07-26 and last updated on 2026-06-16.
References
- http://osvdb.org/37842
- http://osvdb.org/37843
- http://osvdb.org/37844
- http://secunia.com/advisories/26143
- http://support.citrix.com/article/CTX113815
- http://support.citrix.com/article/CTX114028
- http://www.securityfocus.com/bid/24975
- http://www.vupen.com/english/advisories/2007/2583
Affected products (4)
- cpe:2.3:a:citrix:access_gateway:*:*:standard:*:*:*:*:*
- cpe:2.3:a:citrix:access_gateway:*:hf1:advanced:*:*:*:*:*
- cpe:2.3:a:citrix:endpoint_analysis_client:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
More vulnerabilities in Citrix Access Gateway
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- CVE-2011-2882 — Critical (CVSS 9.3): Stack-based buffer overflow in the NSEPA.NsepaCtrl.1 ActiveX control in nsepa.ocx in Citrix Access Gateway Enterprise…
- CVE-2010-4566 — Critical (CVSS 9.3): The web authentication form in the NT4 authentication component in Citrix Access Gateway Enterprise Edition 9.2-49.8…
- CVE-2007-4017 — High (CVSS 7.6): Cross-site request forgery (CSRF) vulnerability in the web-based administration console in Citrix Access Gateway before…
- CVE-2007-4016 — Medium (CVSS 6.8): Unspecified vulnerability in the client components in Citrix Access Gateway Standard Edition before 4.5.5 and Advanced…