How severe is CVE-2018-0855?

CVE-2018-0855 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2018-0855 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-0855?

CVE-2018-0855 primarily affects Microsoft Windows 7. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-0855?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-0855 published?

CVE-2018-0855 was published on 2018-02-15 and last updated on 2026-06-17.

CVE-2018-0855

CVE-2018-0855 is a medium-severity vulnerability in Microsoft Windows 7 with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.3
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Microsoft Windows 7
Published: 2018-02-15
Last modified: 2026-06-17

Description

The Microsoft Windows Embedded OpenType (EOT) font engine in Microsoft Windows 7 SP1 and Windows Server 2008 R2 allows information disclosure, due to how the Windows EOT font engine handles embedded fonts, aka "Windows EOT Font Engine Information Disclosure Vulnerability". This CVE ID is unique from CVE-2018-0755, CVE-2018-0760, and CVE-2018-0761.

Frequently asked questions

What is CVE-2018-0855?: The Microsoft Windows Embedded OpenType (EOT) font engine in Microsoft Windows 7 SP1 and Windows Server 2008 R2 allows information disclosure, due to how the Windows EOT font engine handles embedded fonts, aka "Windows EOT Font Engine Information Disclosure Vulnerability". This CVE ID is unique from CVE-2018-0755, CVE-2018-0760, and CVE-2018-0761.
How severe is CVE-2018-0855?: CVE-2018-0855 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2018-0855 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-0855?: CVE-2018-0855 primarily affects Microsoft Windows 7. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-0855?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-0855 published?: CVE-2018-0855 was published on 2018-02-15 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:*:*

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