Skype for Business and Lync Server Denial of Service Vulnerability
Published Jun 12, 2019
5.9
MEDIUMCVSS 3.0
EPSS 5.28%
Description
A denial of service vulnerability exists in Skype for Business. An attacker who successfully exploited the vulnerability could cause Skype for Business to stop responding. Note that the denial of service would not allow an attacker to execute code or to elevate the attacker's user rights. To exploit the vulnerability, an attacker needs to obtain a dial-in link for a vulnerable server and then initiates a series of calls within a short amount of time. The update addresses the vulnerability by correcting the way that Skype for Business server handles objects in memory.
Affected products
-
- Version 0StatusaffectedConstraints<publication
- Version
-
- Version 0StatusaffectedConstraints<publication
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Microsoft | Microsoft Lync Server 2010 | n/a |
| ||||||
| Microsoft | Microsoft Lync Server 2013 | n/a |
|
- 2010
- 2013
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:H/PR:N/UI:N/S:U/C:N/I:N/A:H
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 2, 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 (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 5.28% (0.05281) | 92.32th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.28% (0.05281) | 91.49th | v5 (v2026.06.15) |
| May 21, 2025 | 14.39% (0.14394) | 94.05th | v4 (v2025.03.14) |
| May 10, 2025 | 11.14% (0.11141) | 93.09th | v4 (v2025.03.14) |
| Mar 30, 2025 | 14.39% (0.14394) | 93.83th | v4 (v2025.03.14) |
| Mar 29, 2025 | 15.46% (0.15459) | 91.13th | v4 (v2025.03.14) |
| Mar 19, 2025 | 14.39% (0.14394) | 93.60th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.41% (0.04410) | 88.26th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.20% (0.00196) | 58.48th | v3 (v2023.03.01) |
| Nov 2, 2023 | 0.20% (0.00200) | 57.68th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.20% (0.00196) | 55.68th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.44% (0.03442) | 84.71th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.63% (0.02632) | 80.45th | v2 (v2022.01.01) |
| Feb 4, 2022 | 23.96% (0.23965) | 95.14th | v2 (v2022.01.01) |
| Feb 3, 2022 | 21.08% (0.21078) | 94.43th | v1 |
| Jan 6, 2022 | 21.08% (0.21078) | 94.37th | v1 |
| Jan 5, 2022 | 5.62% (0.05618) | 89.38th | v5 (v2026.06.15) |
| Apr 14, 2021 | 5.62% (0.05618) | 0.00th | v1 |
No CWE recorded.
References (2)
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1029 vendor-advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1029 PatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1029 | vendor-advisory | |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1029 | PatchVendor Advisory |
Change history (0)
No recorded changes yet.