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CVE-2014-4148

86
FAUCET Score

CVE-2014-4148 is a critical remote code execution vulnerability affecting numerous Microsoft Windows operating systems, including Windows 7, 8, 8.1, Server 2003, 2008, and 2012. This flaw resides in the win32k.sys kernel-mode driver and can be exploited by a remote attacker through a specially crafted TrueType font. With a CVSS score of 8.8 (High), it presents a significant risk, allowing for complete compromise of confidentiality, integrity, and availability with low attack complexity and no authentication required, though user interaction is necessary. This vulnerability has been actively exploited in the wild since October 2014, as confirmed by its presence in the KEV catalog, and has garnered substantial community discussion and media coverage, despite a lack of public exploit code in common repositories.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_8:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_rt:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
52.74%
Probability of exploitation in next 30 days
EPSS Percentile
98.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · May 25, 2022
This CVE's current EPSS score of 0.5274 is in the 99th percentile among its peer group of 14,855 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 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 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
blogs.technet.com / b/srd/archive/2014/10/14/accessing-risk-for-the-october-2014-security-updates.aspx
Not Applicable
docs.microsoft.com / en-us/security-updates/securitybulletins/2014/ms14-058
PatchVendor Advisory
secunia.com / advisories/60970
Broken Link
exchange.xforce.ibmcloud.com / vulnerabilities/96995
Third Party AdvisoryVDB Entry
securityfocus.com / bid/70429
Broken LinkThird Party AdvisoryVDB Entry