A vulnerability in the Trust Verification Service (TVS) of Cisco Unified Communications Manager could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device
Published Sep 7, 2017
7.5
HIGHCVSS 3.0
EPSS 2.32%
Description
A vulnerability in the Trust Verification Service (TVS) of Cisco Unified Communications Manager could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper handling of Transport Layer Security (TLS) traffic by the affected software. An attacker could exploit this vulnerability by generating incomplete traffic streams. A successful exploit could allow the attacker to deny access to the TVS for an affected device, resulting in a DoS condition, until an administrator restarts the service. Known Affected Releases 10.0(1.10000.24) 10.5(2.10000.5) 11.0(1.10000.10) 9.1(2.10000.28). Cisco Bug IDs: CSCux21905.
Affected products
- Vendor n/a Product Cisco Unified Communications Manager Defaultn/a
- Version Cisco Unified Communications ManagerStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Cisco Unified Communications Manager | n/a |
|
- 9.1\(2.10000.28\)
- 10.0\(1.10000.24\)
- 10.5\(2.10000.5\)
- 11.0\(1.10000.10\)
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.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:P
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
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.32% (0.02322) | 82.85th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.32% (0.02322) | 81.18th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.43% (0.01426) | 79.28th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.31% (0.00312) | 70.94th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.31% (0.00312) | 69.29th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.31% (0.00312) | 66.30th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.53% (0.00531) | 73.52th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.62% (0.01623) | 33.90th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.62% (0.01623) | 0.00th | v1 |
References (4)
- http://www.securityfocus.com/bid/100662 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039286 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://quickview.cloudapps.cisco.com/quickview/bug/CSCux21905 x_refsource_CONFIRMVendor Advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170906-ucm x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/100662 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1039286 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://quickview.cloudapps.cisco.com/quickview/bug/CSCux21905 | x_refsource_CONFIRMVendor Advisory | |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170906-ucm | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.