Back
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…
High7.8EPSS 4.0%
- Published
- Updated
- Reserved
- Assigned by
- cisco
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 4.0% · top 9.5% of all CVEs (5 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (10)
- ADV-2009-2915 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 36499 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 37039 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 1023018 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 36152 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 36498 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 20091014 Cisco Unified Presence Denial of Service Vulnerabilities (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- 20090826 Cisco Unified Communications Manager Denial of Service Vulnerabilities (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- 1022775 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 36676 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2009-2052)Record last updated .