CVE-2009-2053

Unified Communications Manager vulnerability

CVSS

7.8

EPSS

3.4%

EPSS pct

88th

Exploited

No known

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(2a)su1, and 7.1 before 7.1(2) allows remote attackers to cause a denial of service (file-descriptor exhaustion and SCCP outage) via a flood of TCP packets, aka Bug ID CSCsx32236.

Affected vendor

Cisco

Affected product

Unified Communications Manager

CVSS vector

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

Published

2009-08-27

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to complete impact to availability.

Its EPSS score of 3.4% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2009-2053

Confirm whether Cisco Unified Communications Manager is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2009-2053.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2009-2053

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2009-2053 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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