An elevation of privilege vulnerability exists in rpcss.dll when the RPC service Activation Kernel improperly handles an RPC request
Published Jul 15, 2019
7.8
HIGHCVSS 3.0
EPSS 4.91%
Description
An elevation of privilege vulnerability exists in rpcss.dll when the RPC service Activation Kernel improperly handles an RPC request. To exploit this vulnerability, a low level authenticated attacker could run a specially crafted application. The security update addresses this vulnerability by correcting how rpcss.dll handles these requests., aka 'Windows RPCSS Elevation of Privilege Vulnerability'.
Affected products
-
- Version MultipleStatusaffectedConstraints-
- Version
- n/a
- 1607
- 1703
- 1709
- 1803
- 1809
- 1903
- n/a
- n/a
- n/a
- n/a
- r2
- r2
- n/a
- r2
- n/a
- 1803
- 1903
- 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.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AV:L/AC:L/Au:N/C:C/I:C/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 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 2, 2026 | 4.91% (0.04910) | 91.84th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.91% (0.04910) | 90.95th | v5 (v2026.06.15) |
| Mar 18, 2026 | 1.99% (0.01991) | 83.45th | v4 (v2025.03.14) |
| Mar 17, 2026 | 4.20% (0.04196) | 88.59th | v4 (v2025.03.14) |
| Oct 27, 2025 | 2.91% (0.02912) | 85.89th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.91% (0.03914) | 87.52th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.05% (0.00053) | 23.36th | v3 (v2023.03.01) |
| Jun 11, 2024 | 0.05% (0.00053) | 21.00th | v3 (v2023.03.01) |
| Jul 8, 2023 | 0.05% (0.00053) | 18.98th | v3 (v2023.03.01) |
| Jun 21, 2023 | 0.07% (0.00068) | 28.13th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00053) | 18.77th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.77% (0.02774) | 83.01th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.77% (0.02774) | 81.31th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.77% (0.02774) | 63.80th | v2 (v2022.01.01) |
| Feb 3, 2022 | 24.37% (0.24372) | 95.46th | v1 |
| Jan 6, 2022 | 24.37% (0.24372) | 95.40th | v1 |
| Sep 1, 2021 | 24.37% (0.24372) | 98.13th | v1 |
| Apr 14, 2021 | 24.37% (0.24372) | 0.00th | v1 |
No CWE recorded.
References (2)
- http://packetstormsecurity.com/files/153683/Microsoft-Windows-RPCSS-Activation-Kernel-Security-Callback-Privilege-Escalation.html x_refsource_MISCThird Party Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1089 x_refsource_MISCPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://packetstormsecurity.com/files/153683/Microsoft-Windows-RPCSS-Activation-Kernel-Security-Callback-Privilege-Escalation.html | x_refsource_MISCThird Party Advisory | |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1089 | x_refsource_MISCPatchVendor Advisory |
Change history (0)
No recorded changes yet.