CVE-2018-8627 json
An information disclosure vulnerability exists when Microsoft Excel software reads out of bound memory due to an uninitialized variable, wh…
published 2018-12-12 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-20239
- cvss
- 5.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 8.6%
- EPSS 8.6% chance of exploitation in 30 days, percentile 95%
- public exploits
- 0
- none known
Summary
An information disclosure vulnerability exists when Microsoft Excel software reads out of bound memory due to an uninitialized variable, which could disclose the contents of memory, aka "Microsoft Excel Information Disclosure Vulnerability." This affects Microsoft Office, Office 365 ProPlus, Microsoft Excel, Microsoft Excel Viewer, Excel. This CVE ID is unique from CVE-2018-8598.
Patch / fix
Exploit prediction
8.62% chance of exploitation in the next 30 days, higher than 95% 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 Microsoft Office
- Microsoft Microsoft Excel
- Microsoft Microsoft Excel Viewer
- Microsoft Excel
- Microsoft Office
Classification
- Weakness
-
- CWE-908 Use of Uninitialized Resource
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2018-8627
patch, vendor-advisory
-
securityfocus.com
/bid/106120
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2018-8627
- NVD CVE-2018-8627
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.