How severe is CVE-2009-2050?

CVE-2009-2050 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2009-2050 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-2050?

CVE-2009-2050 affects Cisco Unified Communications Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-2050?

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-2009-2050 published?

CVE-2009-2050 was published on 2009-08-27 and last updated on 2026-06-16.

CVE-2009-2050

CVE-2009-2050 is a high-severity vulnerability in Cisco Unified Communications 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: 3% (88th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco Unified Communications Manager
Published: 2009-08-27
Last modified: 2026-06-16

Description

Cisco Unified Communications Manager (aka CUCM, formerly CallManager) before 6.1(1) allows remote attackers to cause a denial of service (voice-services outage) via a malformed header in a SIP message, aka Bug ID CSCsi46466.

Frequently asked questions

What is CVE-2009-2050?: Cisco Unified Communications Manager (aka CUCM, formerly CallManager) before 6.1(1) allows remote attackers to cause a denial of service (voice-services outage) via a malformed header in a SIP message, aka Bug ID CSCsi46466.
How severe is CVE-2009-2050?: CVE-2009-2050 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2009-2050 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-2050?: CVE-2009-2050 affects Cisco Unified Communications Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-2050?: 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-2009-2050 published?: CVE-2009-2050 was published on 2009-08-27 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*

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