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CVE-2018-0855

19
FAUCET Score

CVE-2018-0855 is an information disclosure vulnerability affecting the Microsoft Windows Embedded OpenType (EOT) font engine in Windows 7 SP1 and Windows Server 2008 R2. This medium-severity vulnerability, with a CVSS score of 4.3, could allow an attacker to disclose information if a user visits a specially crafted website. The attack requires user interaction (UI:R) but has low impact on confidentiality (C:L) and no impact on integrity or availability. There is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. While there is limited community discussion and media coverage, its EPSS score suggests a relatively low probability of exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
r2CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
5.93%
Probability of exploitation in next 30 days
EPSS Percentile
92.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0593 is in the 97th percentile among its peer group of 26,221 CVEs.

Social Chatter

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

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Windows 7 for 32-bit Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Windows 7 for x64-based Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2008 R2 for x64-based Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
View patch

Vendor Advisories (1)

microsoft2018-FEB/CVE-2018-0855Important

Windows EOT Font Engine Information Disclosure Vulnerability

Feb 13, 2018

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-0855
PatchVendor Advisory
securityfocus.com / bid/102936
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040374
Third Party AdvisoryVDB Entry