How severe is CVE-2015-0616?

CVE-2015-0616 has a CVSS 2.0 base score of 7.1, rated high severity.

Is CVE-2015-0616 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-0616?

CVE-2015-0616 primarily affects Cisco Unity Connection. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-0616?

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-2015-0616 published?

CVE-2015-0616 was published on 2015-04-03 and last updated on 2026-06-17.

CVE-2015-0616

CVE-2015-0616 is a high-severity vulnerability in Cisco Unity Connection with a CVSS 2.0 base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-19.

Key facts

Severity: High (CVSS 2.0 base score 7.1)
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-19
Affected product: Cisco Unity Connection
Published: 2015-04-03
Last modified: 2026-06-17

Description

The Connection Conversation Manager (aka CuCsMgr) process in Cisco Unity Connection 8.5 before 8.5(1)SU7, 8.6 before 8.6(2a)SU4, and 9.x before 9.1(2)SU2, when SIP trunk integration is enabled, allows remote attackers to cause a denial of service (core dump and restart) by improperly terminating SIP TCP connections, aka Bug ID CSCul69819.

Frequently asked questions

What is CVE-2015-0616?: The Connection Conversation Manager (aka CuCsMgr) process in Cisco Unity Connection 8.5 before 8.5(1)SU7, 8.6 before 8.6(2a)SU4, and 9.x before 9.1(2)SU2, when SIP trunk integration is enabled, allows remote attackers to cause a denial of service (core dump and restart) by improperly terminating SIP TCP connections, aka Bug ID CSCul69819.
How severe is CVE-2015-0616?: CVE-2015-0616 has a CVSS 2.0 base score of 7.1, rated high severity.
Is CVE-2015-0616 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-0616?: CVE-2015-0616 primarily affects Cisco Unity Connection. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-0616?: 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-2015-0616 published?: CVE-2015-0616 was published on 2015-04-03 and last updated on 2026-06-17.

References

Affected products (19)

cpe:2.3:a:cisco:unity_connection:8.5\(1\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:8.5\(1\)su1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:8.5\(1\)su2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:8.5\(1\)su3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:8.5\(1\)su4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:8.5\(1\)su5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:8.5\(1\)su6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:8.5_base:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:8.6\(1\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:8.6\(1a\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:8.6\(2\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:8.6\(2a\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:8.6\(2a\)su1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:8.6\(2a\)su2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:8.6\(2a\)su3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:8.6_base:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:9.0\(1\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:9.1\(1\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:9.1\(2\):*:*:*:*:*:*:*

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