How severe is CVE-2011-2563?

CVE-2011-2563 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2011-2563 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-2563?

CVE-2011-2563 primarily affects Cisco Unified Communications Manager. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-2563?

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-2011-2563 published?

CVE-2011-2563 was published on 2011-08-29 and last updated on 2026-06-16.

CVE-2011-2563

CVE-2011-2563 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: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco Unified Communications Manager
Published: 2011-08-29
Last modified: 2026-06-16

Description

Unspecified vulnerability in the Service Advertisement Framework (SAF) in Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 8.x before 8.5(1) and Cisco Intercompany Media Engine 8.x before 8.5(1) allows remote attackers to cause a denial of service (device reload) via crafted SAF packets, aka Bug ID CSCth26669.

Frequently asked questions

What is CVE-2011-2563?: Unspecified vulnerability in the Service Advertisement Framework (SAF) in Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 8.x before 8.5(1) and Cisco Intercompany Media Engine 8.x before 8.5(1) allows remote attackers to cause a denial of service (device reload) via crafted SAF packets, aka Bug ID CSCth26669.
How severe is CVE-2011-2563?: CVE-2011-2563 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2011-2563 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-2563?: CVE-2011-2563 primarily affects Cisco Unified Communications Manager. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-2563?: 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-2011-2563 published?: CVE-2011-2563 was published on 2011-08-29 and last updated on 2026-06-16.

References

Affected products (11)

cpe:2.3:a:cisco:unified_communications_manager:8.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_communications_manager:8.0\(1\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_communications_manager:8.0\(2c\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_communications_manager:8.0\(2c\)su1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_communications_manager:8.0\(3\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_communications_manager:8.0\(3a\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_communications_manager:8.0\(3a\)su1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_communications_manager:8.0\(3a\)su2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_communications_manager:8.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:intercompany_media_engine:8.0\(2\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:intercompany_media_engine:8.0\(3\):*:*:*:*:*:*:*

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