Is CVE-2009-2054 in the CISA KEV catalog?

No. CVE-2009-2054 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-2054?

CVE-2009-2054 has a CVSS v2 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2009-2054?

CVE-2009-2054 has an EPSS score of 3.40% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2009-2054?

Upgrade unified communications manager to 7.1(2a)su1 or later.

CVE & CISA-KEV Catalog

CVE-2009-2054

HIGHEPSS 87th pctl

7.8

CVSS v2

NVD

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(2a)su1, and 7.1 before 7.1(2a)su1 allows remote attackers to cause a denial of service (file-descriptor exhaustion and SIP outage) via a flood of TCP packets, aka Bug ID CSCsx23689.

CWE-770Allocation of Resources Without Limits or Throttling

How to fix

Remediation Available

unified communications managerNVD

Affected:>= 7.1, < 7.1(2a)su1Fixed in:7.1(2a)su1CVE-2009-2054derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

3.40%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Patch1

cisco.com

Third-Party Advisory2

Other references3

Related Vulnerabilities

Other CWE-770 (Allocation of Resources Without Limits or Throttling) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-50387	High	7.5	100%	-	Fix
CVE-2019-11478	Medium	5.3	95%	-	Fix
CVE-2019-11479	High	7.5	92%	-	Fix
CVE-2024-27316	High	7.5	91%	-	Fix
CVE-2022-30522	High	7.5	90%	-	Fix
CVE-2019-9515	High	7.5	88%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.