How severe is CVE-2006-0368?

CVE-2006-0368 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2006-0368 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-0368?

CVE-2006-0368 primarily affects Cisco Call Manager. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-0368?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2006-0368 published?

CVE-2006-0368 was published on 2006-01-22 and last updated on 2026-06-16.

CVE-2006-0368

CVE-2006-0368 is a high-severity vulnerability in Cisco Call Manager with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco Call Manager
Published: 2006-01-22
Last modified: 2026-06-16

Description

Cisco CallManager 3.2 and earlier, 3.3 before 3.3(5)SR1, 4.0 before 4.0(2a)SR2c, and 4.1 before 4.1(3)SR2 allow remote attackers to (1) cause a denial of service (CPU and memory consumption) via a large number of open TCP connections to port 2000 and (2) cause a denial of service (fill the Windows Service Manager communication queue) via a large number of TCP connections to port 2001, 2002, or 7727.

Frequently asked questions

What is CVE-2006-0368?: Cisco CallManager 3.2 and earlier, 3.3 before 3.3(5)SR1, 4.0 before 4.0(2a)SR2c, and 4.1 before 4.1(3)SR2 allow remote attackers to (1) cause a denial of service (CPU and memory consumption) via a large number of open TCP connections to port 2000 and (2) cause a denial of service (fill the Windows Service Manager communication queue) via a large number of TCP connections to port 2001, 2002, or 7727.
How severe is CVE-2006-0368?: CVE-2006-0368 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2006-0368 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-0368?: CVE-2006-0368 primarily affects Cisco Call Manager. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-0368?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2006-0368 published?: CVE-2006-0368 was published on 2006-01-22 and last updated on 2026-06-16.

References

Affected products (23)

cpe:2.3:h:cisco:call_manager:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:1.0:*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:2.0:*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:3.0:*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:3.1:*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:3.1\(2\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:3.1\(3a\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:3.2:*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:3.3:*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:3.3\(3\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:3.3\(3\)es61:*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:3.3\(4\)es25:*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:3.3\(5\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:3.3\(5\)es30:*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:4.0:*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:4.0\(2a\)es40:*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:4.0\(2a\)es62:*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:4.0\(2a\)sr2b:*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:4.1\(2\)es33:*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:4.1\(2\)es55:*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:4.1\(3\)es07:*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:4.1\(3\)es32:*:*:*:*:*:*:*
cpe:2.3:h:cisco:call_manager:4.1\(3\)sr1:*:*:*:*:*:*:*

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