A vulnerability in the XCP Router service of the Cisco Unified Communications Manager IM & Presence Service (CUCM IM&P) and the Cisco TelePresence Video Communication Server (VCS) and Expressway could allow an unauthenticated, remote attacker to cause a temporary service outage for all IM&P users, resulting in a denial of service (DoS) condition
Published Aug 15, 2018
7.5
HIGHCVSS 3.1
EPSS 3.49%
Description
A vulnerability in the XCP Router service of the Cisco Unified Communications Manager IM & Presence Service (CUCM IM&P) and the Cisco TelePresence Video Communication Server (VCS) and Expressway could allow an unauthenticated, remote attacker to cause a temporary service outage for all IM&P users, resulting in a denial of service (DoS) condition. The vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending a malicious IPv4 or IPv6 packet to an affected device on TCP port 7400. An exploit could allow the attacker to overread a buffer, resulting in a crash and restart of the XCP Router service. Cisco Bug IDs: CSCvg97663, CSCvi55947.
Affected products
- Vendor Cisco Systems, Inc. Product TelePresence Video Communication Server (VCS) and Expressway Defaultn/a
- Version unspecifiedStatusaffectedConstraints-
- Version
- Vendor Cisco Systems, Inc. Product Unified Communications Manager IM & Presence Service (CUCM IM&P) Defaultn/a
- Version unspecifiedStatusaffectedConstraints-
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Cisco Systems, Inc. | TelePresence Video Communication Server (VCS) and Expressway | n/a |
| ||||||
| Cisco Systems, Inc. | Unified Communications Manager IM & Presence Service (CUCM IM&P) | n/a |
|
Configuration 1
- x7.0.1
- x7.2.4
- x8.1
- x8.2.2
- x8.5
- x8.6
- x8.7
- x8.8
- x8.9
- x8.10
- x8.10.4
Configuration 2
- 11.5
- 11.5\(1\)
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Nov 25, 2024 · SSVC 2.0.3
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 v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.49% (0.03491) | 88.75th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.49% (0.03491) | 87.58th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.14% (0.01138) | 76.93th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.49% (0.00494) | 76.97th | v3 (v2023.03.01) |
| Feb 15, 2024 | 0.49% (0.00494) | 75.52th | v3 (v2023.03.01) |
| Jan 6, 2024 | 0.70% (0.00700) | 78.14th | v3 (v2023.03.01) |
| Sep 13, 2023 | 1.03% (0.01032) | 82.08th | v3 (v2023.03.01) |
| Aug 9, 2023 | 1.02% (0.01016) | 81.84th | v3 (v2023.03.01) |
| Mar 31, 2023 | 1.03% (0.01035) | 81.66th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.95% (0.00948) | 80.78th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.94% (0.01943) | 48.45th | v1 |
| Jan 6, 2022 | 1.94% (0.01943) | 47.92th | v1 |
| Sep 1, 2021 | 1.94% (0.01943) | 76.51th | v1 |
| Apr 14, 2021 | 1.94% (0.01943) | 0.00th | v1 |
References (5)
- http://www.securityfocus.com/bid/105102 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/105104 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041533 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041534 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180815-ucmimps-dos vendor-advisoryx_refsource_CISCOVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/105102 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securityfocus.com/bid/105104 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1041533 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1041534 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180815-ucmimps-dos | vendor-advisoryx_refsource_CISCOVendor Advisory |
Change history (0)
No recorded changes yet.