CVE-2018-8430
CVE-2018-8430 is a high-severity vulnerability in Microsoft Office with a CVSS 3.x base score of 7.8. Its EPSS exploit-prediction score of 23% places it in the 97th percentile, indicating an elevated likelihood of exploitation.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 9.3
- EPSS exploit prediction: 23% (97th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Microsoft Office
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2018-8430?
- CVE-2018-8430 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-8430 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 23% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-8430?
- CVE-2018-8430 primarily affects Microsoft Office. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2018-8430?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2018-8430 published?
- CVE-2018-8430 was published on 2018-09-13 and last updated on 2026-06-17.
References
- http://www.securityfocus.com/bid/105212
- http://www.securitytracker.com/id/1041638
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8430
Affected products (4)
- cpe:2.3:a:microsoft:office:2013:sp1:*:*:*:*:*:*
- cpe:2.3:a:microsoft:office:2013:sp1:*:*:rt:*:*:*
- cpe:2.3:a:microsoft:office:2016:*:*:*:click-to-run:*:*:*
- cpe:2.3:a:microsoft:word:2016:*:*:*:*:*:*:*
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