CVE-2018-8544 in the critical feed json
A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka "Windows VBScript Engine Re…
published 2018-11-14 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-20165
- cvss
- 8.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 47.6%
- EPSS 47.6% chance of exploitation in 30 days, percentile 98%
- public exploits
- 1
- Exploit-DB
Summary
A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka "Windows VBScript Engine Remote Code Execution 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-45923)
Exploit prediction
47.56% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-45923 VBScript - 'OLEAUT32!VariantClear' and 'scrrun!VBADictionary::put_Item' Use-After-Free dos, 2018-11-30
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.3 | AV:N/AC:M/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 2019
- Microsoft Windows Server 2012
- Microsoft Windows 8.1
- Microsoft Windows Server 2016
- Microsoft Windows Server 2008 R2
- Microsoft Windows 10
- Microsoft Windows 10 Servers
Classification
- Weakness
-
- CWE-416 Use After Free
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2018-8544
patch, vendor-advisory
-
exploit-db.com
/exploits/45923/
exploit, third-party-advisory, vdb-entry
-
securitytracker.com
/id/1042118
vdb-entry, third-party-advisory
-
securityfocus.com
/bid/105787
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2018-8544
- NVD CVE-2018-8544
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.