The call-handling implementation in Cisco Unity Connection 8.5 before 8.5(1)SU7, 8.6 before 8.6(2a)SU4, 9.x before 9.1(2)SU2, and 10.0 before 10.0(1)SU1, when SIP trunk integration is enabled, allows remote attackers to cause a denial of service (port consumption) by improperly terminating SIP sessions, aka Bug ID CSCul28089
Published Apr 3, 2015
7.1
HIGHCVSS 2.0
EPSS 1.67%
Description
The call-handling implementation in Cisco Unity Connection 8.5 before 8.5(1)SU7, 8.6 before 8.6(2a)SU4, 9.x before 9.1(2)SU2, and 10.0 before 10.0(1)SU1, when SIP trunk integration is enabled, allows remote attackers to cause a denial of service (port consumption) by improperly terminating SIP sessions, aka Bug ID CSCul28089.
Affected products
No data.
- 8.5\(1\)
- 8.5\(1\)su1
- 8.5\(1\)su2
- 8.5\(1\)su3
- 8.5\(1\)su4
- 8.5\(1\)su5
- 8.5\(1\)su6
- 8.5_base
- 8.6\(1\)
- 8.6\(1a\)
- 8.6\(2\)
- 8.6\(2a\)
- 8.6\(2a\)su1
- 8.6\(2a\)su2
- 8.6\(2a\)su3
- 8.6_base
- 9.0\(1\)
- 9.1\(1\)
- 9.1\(2\)
- 10.0.0
- 10.0.5
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.67% (0.01667) | 75.90th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.68% (0.01679) | 73.83th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.90% (0.00901) | 74.05th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.19% (0.00186) | 57.24th | v3 (v2023.03.01) |
| Jul 10, 2024 | 0.19% (0.00186) | 56.24th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.19% (0.00186) | 54.19th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.05% (0.01055) | 50.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
References (2)
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150401-cuc vendor-advisoryx_refsource_CISCOVendor Advisory
- http://www.securitytracker.com/id/1032010 vdb-entryx_refsource_SECTRACK
| Link | Providers | Tags |
|---|---|---|
| http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150401-cuc | vendor-advisoryx_refsource_CISCOVendor Advisory | |
| http://www.securitytracker.com/id/1032010 | vdb-entryx_refsource_SECTRACK |
Change history (0)
No recorded changes yet.