CVE-2018-8430
A remote code execution vulnerability exists in Microsoft Word if a user opens a specially crafted PDF file, aka "Word PDF Remote Code Execution Vulnerability." This affects Microsoft Word, Microsoft Office.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 23.0%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
A remote code execution vulnerability exists in Microsoft Word if a user opens a specially crafted PDF file, aka "Word PDF Remote Code Execution Vulnerability." This affects Microsoft Word, Microsoft Office.
- CVSS 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 23.04% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- microsoft/office · microsoft/word
- Source
- secure@microsoft.com
EPSS moved from 20.0% on 21 September 2026 to 23.0% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://www.securityfocus.com/bid/105212Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041638Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8430Patch, Vendor Advisory
- http://www.securityfocus.com/bid/105212Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041638Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8430Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.