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CVE-2009-2052

21
FAUCET Score

CVE-2009-2052 describes a denial-of-service vulnerability affecting Cisco Unified Communications Manager (CUCM) and Cisco Unified Presence. Remote attackers can exploit this flaw by initiating a large number of TCP connections, leading to an outage of TCP services on the affected systems. With a CVSS score of 7.8, this vulnerability is considered high severity, requiring no authentication and low attack complexity to achieve a complete loss of availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.0, < 5.1\(3g\)CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*
>= 6.1\(1\), < 6.1\(4\)CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*
>= 7.0, < 7.0\(2\)CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*
>= 7.1, < 7.1\(2\)CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.8HIGH

AV:N/AC:L/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.98%
Probability of exploitation in next 30 days
EPSS Percentile
89.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0398 is in the 81st percentile among its peer group of 51,551 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

secunia.com / advisories/36498
Vendor Advisory
secunia.com / advisories/36499
Vendor Advisory
secunia.com / advisories/37039
Third Party Advisory
securitytracker.com / id
Third Party AdvisoryVDB Entry
cisco.com / en/US/products/products_security_advisory09186a0080af2d11.shtml
PatchVendor Advisory
cisco.com / en/US/products/products_security_advisory09186a0080afc930.shtml
Vendor Advisory
securityfocus.com / bid/36152
Third Party AdvisoryVDB Entry
securityfocus.com / bid/36676
Third Party AdvisoryVDB Entry
securitytracker.com / id
Third Party AdvisoryVDB Entry
vupen.com / english/advisories/2009/2915
Third Party Advisory