How severe is CVE-2006-3594?

CVE-2006-3594 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2006-3594 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-2006-3594?

CVE-2006-3594 primarily affects Cisco Unified Callmanager. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-3594?

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-2006-3594 published?

CVE-2006-3594 was published on 2006-07-18 and last updated on 2026-06-16.

CVE-2006-3594

CVE-2006-3594 is a high-severity vulnerability in Cisco Unified Callmanager with a CVSS 2.0 base score of 7.5. 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 7.5)
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco Unified Callmanager
Published: 2006-07-18
Last modified: 2026-06-16

Description

Buffer overflow in Cisco Unified CallManager (CUCM) 5.0(1) through 5.0(3a) allows remote attackers to execute arbitrary code via a long hostname in a SIP request, aka bug CSCsd96542.

Frequently asked questions

What is CVE-2006-3594?: Buffer overflow in Cisco Unified CallManager (CUCM) 5.0(1) through 5.0(3a) allows remote attackers to execute arbitrary code via a long hostname in a SIP request, aka bug CSCsd96542.
How severe is CVE-2006-3594?: CVE-2006-3594 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2006-3594 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-2006-3594?: CVE-2006-3594 primarily affects Cisco Unified Callmanager. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-3594?: 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-2006-3594 published?: CVE-2006-3594 was published on 2006-07-18 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:cisco:unified_callmanager:5.0\(1\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_callmanager:5.0\(2\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_callmanager:5.0\(3\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_callmanager:5.0\(3a\):*:*:*:*:*:*:*

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