CVE-2018-8440
An elevation of privilege vulnerability exists when Windows improperly handles calls to Advanced Local Procedure Call (ALPC), aka "Windows…
- Published
- Updated
- Reserved
- Assigned by
- microsoft
Description
An elevation of privilege vulnerability exists when Windows improperly handles calls to Advanced Local Procedure Call (ALPC), aka "Windows ALPC Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Microsoft Windows Privilege Escalation Vulnerability.
- Added
- 28 Mar 2022
- Fix due (US federal)
- 18 Apr 2022
- Used by ransomware
- Known
Apply updates per vendor instructions.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 18.5% · top 2.7% of all CVEs (3 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
- Elevation of Privilege
- CWE-noinfo Not enough information
Affected products
- affected 32-bit Systems Service Pack 1
- affected x64-based Systems Service Pack 1
Microsoft · Windows Server 2012 R2
- affected (Server Core installation)
- affected Windows RT 8.1
Microsoft · Windows Server 2008
- affected 32-bit Systems Service Pack 2
- affected 32-bit Systems Service Pack 2 (Server Core installation)
- affected Itanium-Based Systems Service Pack 2
- affected x64-based Systems Service Pack 2
- affected x64-based Systems Service Pack 2 (Server Core installation)
Microsoft · Windows Server 2012
- affected (Server Core installation)
- affected 32-bit systems
- affected x64-based systems
Microsoft · Windows Server 2016
- affected (Server Core installation)
Microsoft · Windows Server 2008 R2
- affected Itanium-Based Systems Service Pack 1
- affected x64-based Systems Service Pack 1
- affected x64-based Systems Service Pack 1 (Server Core installation)
- affected 32-bit Systems
- affected Version 1607 for 32-bit Systems
- affected Version 1607 for x64-based Systems
- affected Version 1703 for 32-bit Systems
- affected Version 1703 for x64-based Systems
- affected Version 1709 for 32-bit Systems
- affected Version 1709 for x64-based Systems
- affected Version 1803 for 32-bit Systems
- affected Version 1803 for x64-based Systems
- affected x64-based Systems
Microsoft · Windows 10 Servers
- affected version 1709 (Server Core Installation)
- affected version 1803 (Server Core Installation)
References (6)
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8440 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://blog.0patch.com/2018/09/comparing-our-micropatch-with.html (opens in a new tab)x_refsource_MISCx_transferred
- https://blog.0patch.com/2018/08/how-we-micropatched-publicly-dropped.html (opens in a new tab)x_refsource_MISCx_transferred
- 1041578 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 105153 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8440 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2018-8440)Record last updated .