CVE-2007-2850
CVE-2007-2850 is a critical-severity vulnerability in Citrix Access Essentials with a CVSS 2.0 base score of 10.0. 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 10.0)
- EPSS exploit prediction: 3% (85th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Citrix Access Essentials
- Published:
- Last modified:
Description
The Session Reliability Service (XTE) in Citrix MetaFrame Presentation Server 3.0, Presentation Server 4.0, and Access Essentials 1.0 and 1.5, allows remote attackers to bypass network security policies and connect to arbitrary TCP ports via a modified address:port string.
Frequently asked questions
- What is CVE-2007-2850?
- The Session Reliability Service (XTE) in Citrix MetaFrame Presentation Server 3.0, Presentation Server 4.0, and Access Essentials 1.0 and 1.5, allows remote attackers to bypass network security policies and connect to arbitrary TCP ports via a modified address:port string.
- How severe is CVE-2007-2850?
- CVE-2007-2850 has a CVSS 2.0 base score of 10.0, rated critical severity.
- Is CVE-2007-2850 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2007-2850?
- CVE-2007-2850 primarily affects Citrix Access Essentials. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2007-2850?
- 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-2007-2850 published?
- CVE-2007-2850 was published on 2007-05-24 and last updated on 2026-06-16.
References
- http://fortconsult.net/files/fortconsult.dk/citrix_advisory.pdf
- http://secunia.com/advisories/25371
- http://support.citrix.com/article/CTX112964
- http://www.securitytracker.com/id?1018098
- http://www.vupen.com/english/advisories/2007/1918
- https://exchange.xforce.ibmcloud.com/vulnerabilities/34448
Affected products (8)
- cpe:2.3:a:citrix:access_essentials:1.0:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:access_essentials:1.5:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:metaframe:3.0:*:microsoft_windows_2000:*:*:*:*:*
- cpe:2.3:a:citrix:metaframe:3.0:*:microsoft_windows_2003:*:*:*:*:*
- cpe:2.3:a:citrix:metaframe:3.0:*:x64_edition:*:*:*:*:*
- cpe:2.3:a:citrix:metaframe:4.0:*:microsoft_windows_2000:*:*:*:*:*
- cpe:2.3:a:citrix:metaframe:4.0:*:microsoft_windows_2003:*:*:*:*:*
- cpe:2.3:a:citrix:metaframe:4.0:*:x64_edition:*:*:*:*:*
More vulnerabilities in Citrix Access Essentials
- CVE-2008-0356 — Critical (CVSS 10.0): Buffer overflow in the Independent Management Architecture (IMA) service in Citrix Presentation Server (MetaFrame…
- CVE-2008-4676 — Medium (CVSS 6.8): Unspecified vulnerability in Citrix XenApp (formerly Presentation Server) 4.5 Feature Pack 1 and earlier, Presentation…
- CVE-2008-2300 — Medium (CVSS 6.5): Unspecified vulnerability in Citrix Presentation Server 4.5 and earlier, Citrix Access Essentials 2.0 and earlier, and…
- CVE-2008-2299 — Medium (CVSS 5.0): Unspecified vulnerability in SecureICA and ICA Basic encryption of Citrix Presentation Server 4.5 and earlier, Access…
- CVE-2002-2426 — Medium (CVSS 4.3): Cross-site request forgery (CSRF) vulnerability in Citrix Presentation Server 4.0 and 4.5, MetaFrame Presentation…