CVE-2009-2052
CVE-2009-2052 is a high-severity vulnerability in Cisco Unified Communications Manager with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: High (CVSS 2.0 base score 7.8)
- EPSS exploit prediction: 4% (89th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Cisco Unified Communications Manager
- Published:
- Last modified:
Description
Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 4.x, 5.x before 5.1(3g), 6.x before 6.1(4), 7.0 before 7.0(2), and 7.1 before 7.1(2); and Cisco Unified Presence 1.x, 6.x before 6.0(6), and 7.x before 7.0(4); allows remote attackers to cause a denial of service (TCP services outage) via a large number of TCP connections, related to "tracking of network connections," aka Bug IDs CSCsq22534 and CSCsw52371.
Frequently asked questions
- What is CVE-2009-2052?
- Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 4.x, 5.x before 5.1(3g), 6.x before 6.1(4), 7.0 before 7.0(2), and 7.1 before 7.1(2); and Cisco Unified Presence 1.x, 6.x before 6.0(6), and 7.x before 7.0(4); allows remote attackers to cause a denial of service (TCP services outage) via a large number of TCP connections, related to "tracking of network connections," aka Bug IDs CSCsq22534 and CSCsw52371.
- How severe is CVE-2009-2052?
- CVE-2009-2052 has a CVSS 2.0 base score of 7.8, rated high severity.
- Is CVE-2009-2052 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2009-2052?
- CVE-2009-2052 affects Cisco Unified Communications Manager. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2009-2052?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2009-2052 published?
- CVE-2009-2052 was published on 2009-08-27 and last updated on 2026-06-16.
References
- http://secunia.com/advisories/36498
- http://secunia.com/advisories/36499
- http://secunia.com/advisories/37039
- http://securitytracker.com/id?1023018
- http://www.cisco.com/en/US/products/products_security_advisory09186a0080af2d11.shtml
- http://www.cisco.com/en/US/products/products_security_advisory09186a0080afc930.shtml
- http://www.securityfocus.com/bid/36152
- http://www.securityfocus.com/bid/36676
- http://www.securitytracker.com/id?1022775
- http://www.vupen.com/english/advisories/2009/2915
Affected products (1)
- cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*
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