How severe is CVE-2018-1028?

CVE-2018-1028 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-1028 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 19% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1028?

CVE-2018-1028 primarily affects Microsoft Excel Services. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-1028?

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-2018-1028 published?

CVE-2018-1028 was published on 2018-04-12 and last updated on 2026-06-17.

CVE-2018-1028

CVE-2018-1028 is a high-severity vulnerability in Microsoft Excel Services with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 19% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.3
EPSS exploit prediction: 19% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Microsoft Excel Services
Published: 2018-04-12
Last modified: 2026-06-17

Description

A remote code execution vulnerability exists when the Office graphics component improperly handles specially crafted embedded fonts, aka "Microsoft Office Graphics Remote Code Execution Vulnerability." This affects Word, Microsoft Office, Microsoft SharePoint, Excel, Microsoft SharePoint Server.

Frequently asked questions

What is CVE-2018-1028?: A remote code execution vulnerability exists when the Office graphics component improperly handles specially crafted embedded fonts, aka "Microsoft Office Graphics Remote Code Execution Vulnerability." This affects Word, Microsoft Office, Microsoft SharePoint, Excel, Microsoft SharePoint Server.
How severe is CVE-2018-1028?: CVE-2018-1028 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-1028 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 19% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1028?: CVE-2018-1028 primarily affects Microsoft Excel Services. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-1028?: 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-2018-1028 published?: CVE-2018-1028 was published on 2018-04-12 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:a:microsoft:excel_services:-:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:office:2013:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:office:2013_rt:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:office:2016:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:office_2010:*:sp2:*:*:*:*:*:*
cpe:2.3:a:microsoft:office_web_apps:2010:sp2:*:*:*:*:*:*
cpe:2.3:a:microsoft:office_web_apps:2013:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_enterprise_server:2013:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:word_automation_services:-:*:*:*:*:*:*:*

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