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CVE-2011-2560

23
FAUCET Score

CVE-2011-2560 describes a denial-of-service vulnerability in the Packet Capture Service of Cisco Unified Communications Manager (CUCM) 4.x. Remote attackers can exploit this by establishing numerous idle TCP connections, leading to excessive memory consumption and system restarts. This vulnerability carries a high severity CVSS score of 7.8, indicating a network-based attack with low complexity and a critical impact on availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.1\(3\)CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:4.1\(3\):*:*:*:*:*:*:*
4.1\(3\)sr1CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:4.1\(3\)sr1:*:*:*:*:*:*:*
4.1\(3\)sr2CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:4.1\(3\)sr2:*:*:*:*:*:*:*
4.1\(3\)sr3CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:4.1\(3\)sr3:*:*:*:*:*:*:*
4.1\(3\)sr4CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:4.1\(3\)sr4:*:*:*:*:*:*:*

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
1.76%
Probability of exploitation in next 30 days
EPSS Percentile
75.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0176 is in the 58th percentile among its peer group of 51,485 CVEs.

Social Chatter

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

cisco.com / en/US/products/products_security_advisory09186a0080b8f531.shtml
Vendor Advisory