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CVE-2018-8430

35
FAUCET Score

CVE-2018-8430 is a remote code execution vulnerability affecting Microsoft Word and Office, triggered when a user opens a specially crafted PDF file. It carries a high CVSS score of 7.8, indicating a significant risk with potential for complete compromise of confidentiality, integrity, and availability if exploited. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, suggesting awareness within the security community.

Impacted Technologies

VendorProductVersion(s)CPE
2013CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2013:sp1:*:*:*:*:*:*
2013CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2013:sp1:*:*:rt:*:*:*
2016CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2016:*:*:*:click-to-run:*:*:*
2016CPE matchmatch criteria
cpe:2.3:a:microsoft:word:2016:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
23.04%
Probability of exploitation in next 30 days
EPSS Percentile
97.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.2304 is in the 98th percentile among its peer group of 11,617 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft Word 2016 (32-bit edition)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Word 2016 (64-bit edition)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Office 2016 Click-to-Run (C2R) for 32-bit editions
microsoftpatch availablevia msrc
Product: Microsoft Office 2016 Click-to-Run (C2R) for 64-bit editions
microsoftpatch availablevia msrc
Product: Microsoft Word 2013 RT Service Pack 1
microsoftpatch availablevia msrc
Product: Microsoft Word 2013 Service Pack 1 (32-bit editions)
microsoftpatch availablevia msrc
Product: Microsoft Word 2013 Service Pack 1 (64-bit editions)

Vendor Advisories (1)

microsoft2018-Sep/CVE-2018-8430Important

Word PDF Remote Code Execution Vulnerability

Sep 11, 2018

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-8430
PatchVendor Advisory
securityfocus.com / bid/105212
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041638
Third Party AdvisoryVDB Entry