CVE-2018-8440 kev+ ransomware in the critical feed json
An elevation of privilege vulnerability exists when Windows improperly handles calls to Advanced Local Procedure Call (ALPC), aka "Windows…
published 2018-09-13 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-20076
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Exploited
- added 2022-03-28, used in ransomware
- epss
- 18.5%
- EPSS 18.5% chance of exploitation in 30 days, percentile 97%
- public exploits
- 1
- Metasploit
Summary
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.
Patch / fix
cisa required action Apply updates per vendor instructions.
Timeline
- First public exploit (Metasploit exploit/windows/local/alpc_taskscheduler)
- Published
- Added to CISA KEV
- CISA patch deadline
- CISA SSVC: exploitation active
Known exploited
- Added
- 4 y ago
- Patch by
- 2022-04-18 (4 y ago)
- Ransomware
- Known to be used in ransomware campaigns
- Required action
- Apply updates per vendor instructions.
- Vendor, product
- Microsoft, Windows
- CISA name
- Microsoft Windows Privilege Escalation Vulnerability
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- no
- Technical impact
- total
- Assessed
- 21 mo ago
Exploit prediction
18.53% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- Metasploit exploit/windows/local/alpc_taskscheduler Microsoft Windows ALPC Task Scheduler Local Privilege Elevation metasploit exploit, normal rank, 2018-08-27
- blog.0patch.com https://blog.0patch.com/2018/08/how-we-micropatched-publicly-dropped.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
Affected products
- Microsoft Windows 7
- Microsoft Windows Server 2012 R2
- Microsoft Windows RT 8.1
- Microsoft Windows Server 2008
- Microsoft Windows Server 2012
- Microsoft Windows 8.1
- Microsoft Windows Server 2016
- Microsoft Windows Server 2008 R2
- Microsoft Windows 10
- Microsoft Windows 10 Servers
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2018-8440
patch, vendor-advisory
-
blog.0patch.com
/2018/08/how-we-micropatched-publicly-dropped.html
exploit, patch, third-party-advisory
-
blog.0patch.com
/2018/09/comparing-our-micropatch-with.html
third-party-advisory
-
securitytracker.com
/id/1041578
vdb-entry, third-party-advisory
-
securityfocus.com
/bid/105153
vdb-entry, third-party-advisory
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8440
government-resource, us-government-resource
Sources
- CVE List CVE-2018-8440
- NVD CVE-2018-8440
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.