The SIP process in Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 7.x before 7.1(5b)su4 and 8.x before 8.0(1) does not properly handle SDP data within a SIP call in certain situations related to use of the g729ar8 codec for a Media Termination Point (MTP), which allows remote attackers to cause a denial of service (service outage) via a crafted call, aka Bug ID CSCtc61990
Published Aug 29, 2011
7.1
HIGHCVSS 2.0
EPSS 1.06%
Description
The SIP process in Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 7.x before 7.1(5b)su4 and 8.x before 8.0(1) does not properly handle SDP data within a SIP call in certain situations related to use of the g729ar8 codec for a Media Termination Point (MTP), which allows remote attackers to cause a denial of service (service outage) via a crafted call, aka Bug ID CSCtc61990.
Affected products
No data.
- 7.0\(1\)su1
- 7.0\(1\)su1a
- 7.0\(2\)
- 7.0\(2a\)
- 7.0\(2a\)su1
- 7.0\(2a\)su2
- 7.1\(2a\)
- 7.1\(2a\)su1
- 7.1\(2b\)
- 7.1\(2b\)su1
- 7.1\(3\)
- 7.1\(3a\)
- 7.1\(3a\)su1
- 7.1\(3a\)su1a
- 7.1\(3b\)
- 7.1\(3b\)su1
- 7.1\(3b\)su2
- 7.1\(5\)
- 7.1\(5\)su1
- 7.1\(5\)su1a
- 7.1\(5a\)
- 7.1\(5b\)
- 7.1\(5b\)su1
- 7.1\(5b\)su1a
- 7.1\(5b\)su2
- 7.1\(5b\)su3
- 8.0
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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.06% (0.01060) | 63.30th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.06% (0.01060) | 60.01th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.40% (0.00399) | 58.53th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.16% (0.00161) | 54.06th | v3 (v2023.03.01) |
| Apr 25, 2024 | 0.14% (0.00137) | 48.64th | v3 (v2023.03.01) |
| Mar 15, 2024 | 0.13% (0.00127) | 46.29th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.11% (0.00115) | 43.86th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.16% (0.00161) | 50.92th | 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 (1)
- http://www.cisco.com/en/US/products/products_security_advisory09186a0080b8f531.shtml vendor-advisoryx_refsource_CISCOVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.cisco.com/en/US/products/products_security_advisory09186a0080b8f531.shtml | vendor-advisoryx_refsource_CISCOVendor Advisory |
Change history (0)
No recorded changes yet.