CVE-2018-8550 json
An elevation of privilege exists in Windows COM Aggregate Marshaler, aka "Windows COM Elevation of Privilege Vulnerability." This affects W…
published 2018-11-14 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-20171
- cvss
- 7.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.3%
- EPSS 3.3% chance of exploitation in 30 days, percentile 88%
- public exploits
- 1
- Exploit-DB
Summary
An elevation of privilege exists in Windows COM Aggregate Marshaler, aka "Windows COM Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2019, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.
Patch / fix
Timeline
- Published
- First public exploit (EDB-45893)
Exploit prediction
3.29% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-45893 Microsoft Windows - DfMarshal Unsafe Unmarshaling Privilege Escalation local, 2018-11-20
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2018-8550
patch, vendor-advisory
-
exploit-db.com
/exploits/45893/
exploit, third-party-advisory, vdb-entry
-
securitytracker.com
/id/1042139
vdb-entry, third-party-advisory
-
securityfocus.com
/bid/105805
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2018-8550
- NVD CVE-2018-8550
Fencer Vulns 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.