CVE-2018-8378 json
An information disclosure vulnerability exists when Microsoft Office software reads out of bound memory due to an uninitialized variable, w…
published 2018-08-15 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-20022
- cvss
- 5.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 7.3%
- EPSS 7.3% chance of exploitation in 30 days, percentile 94%
- public exploits
- 0
- none known
Summary
An information disclosure vulnerability exists when Microsoft Office software reads out of bound memory due to an uninitialized variable, which could disclose the contents of memory, aka "Microsoft Office Information Disclosure Vulnerability." This affects Word, Microsoft SharePoint Server, Microsoft Office Word Viewer, Microsoft Excel Viewer, Microsoft SharePoint, Microsoft Office.
Patch / fix
Exploit prediction
7.31% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 5.5 | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
Affected products
- Microsoft Word
- Microsoft Microsoft SharePoint Server
- Microsoft Microsoft Office Word Viewer
- Microsoft Microsoft Excel Viewer
- Microsoft Microsoft SharePoint
- Microsoft Microsoft Office
Classification
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2018-8378
patch, vendor-advisory
-
securityfocus.com
/bid/104996
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2018-8378
- NVD CVE-2018-8378
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.