A vulnerability in the file descriptor handling of Cisco TelePresence Video Communication Server (VCS) Expressway could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition
Published Jun 21, 2018
7.5
HIGHCVSS 3.1
EPSS 2.37%
Description
A vulnerability in the file descriptor handling of Cisco TelePresence Video Communication Server (VCS) Expressway could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to exhaustion of file descriptors while processing a high volume of traffic. An attacker could exploit this vulnerability by establishing a high number of concurrent TCP connections to the vulnerable system. An exploit could allow the attacker to cause a restart in a specific process, resulting in a temporary interruption of service. Cisco Bug IDs: CSCvh77056, CSCvh77058, CSCvh95264.
Affected products
- Vendor n/a Product Cisco TelePresence Video Communication Server unknown Defaultn/a
- Version Cisco TelePresence Video Communication Server unknownStatusaffectedConstraints-
- 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 TelePresence Video Communication Server unknown | n/a |
|
- n/a
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 29, 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 (23 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.37% (0.02367) | 83.19th | v5 (v2026.06.15) |
| Aug 19, 2026 | 2.40% (0.02398) | 82.69th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.45% (0.03449) | 87.43th | v5 (v2026.06.15) |
| Mar 30, 2025 | 2.10% (0.02095) | 82.47th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.69% (0.03690) | 79.61th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.10% (0.02095) | 82.85th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.24% (0.00236) | 62.63th | v3 (v2023.03.01) |
| Dec 22, 2023 | 0.24% (0.00236) | 61.71th | v3 (v2023.03.01) |
| Nov 12, 2023 | 0.26% (0.00260) | 63.55th | v3 (v2023.03.01) |
| Jul 20, 2023 | 0.39% (0.00385) | 69.52th | v3 (v2023.03.01) |
| Jul 8, 2023 | 0.39% (0.00391) | 69.67th | v3 (v2023.03.01) |
| Jun 15, 2023 | 0.43% (0.00427) | 70.76th | v3 (v2023.03.01) |
| May 8, 2023 | 0.37% (0.00372) | 68.52th | v3 (v2023.03.01) |
| Apr 27, 2023 | 0.34% (0.00341) | 67.11th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.36% (0.00363) | 67.96th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.14% (0.01136) | 58.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.14% (0.01136) | 56.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.30% (0.01300) | 31.12th | v1 |
| Jan 6, 2022 | 1.30% (0.01300) | 30.48th | v1 |
| Sep 1, 2021 | 1.30% (0.01300) | 69.44th | v1 |
| Apr 14, 2021 | 1.30% (0.01300) | 0.00th | v1 |
References (3)
- http://www.securityfocus.com/bid/104521 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041172 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-vcse-dos x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/104521 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1041172 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-vcse-dos | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.